Thursday, August 9, 2018

ShenZhen PCBA fabrication manufacturers, PCBA manufacturing and assembly services in ShenZhen, Printed Circuit Board Assembly Services and Manufacturers In ShenZhen China



Shenzhen is the epicenter for electronic manufacturing services. Here, you can find suppliers for everything from power banks to VR headsets.

The ecosystem is also very open. Even the smallest startup will find suppliers that are interested in working with them. 

Tommy China Business Consulting - Your Reliable PCBA fabrication manufacturers Partner Established in 2009 and based in Shenzhen. We have developed a highly qualified group of PCBA ShenZhen manufacturers who can make PCB & PCBA and EMS (electronics manufacturing service) with nearly 15-year experience in PCB Design & Layout, PCB Fabrication, PCB Assembly, PCBA Prototype, PCBA Test, Electronic Part Sourcing and OEM for kinds of smart electronic manufacturing services. 

 
Our product (Security PCBA , gps PCBA, Meter PCBA, Car alarm system PCBA, Medical PCBA. Flexible PCB , Circuit Board assembly ,Led Circuit Board. Multilayer PCB, Rigid PCB . Advisement Player PCBA, learning machine PCBA, POS machine PCBA )
We are experienced in producing PCBAs on a variety of substrates including FR4, CEM1, CEM3, Phenolic, Polyimide, and Aluminum substrate. We have dedicated SMT, PTH and Mixed Technology production lines, as well as dedicated RoHS lines per IPC standards.

We provide the following PCBA manufacturing capabilities in ShenZhen:

SMT placement – with 0201 passives and 0.35mm pitch BGA in production
Solder Paste inspection
Auto Insertion – radial and axial
Manual Through Hole assembly lines with both leaded and unleaded processes
Single and Double Sided processes
Selective Soldering
X-Ray inspection
AOI
Flying Probe test
ICT
Function Test
Conformal Coating
Potting 

China is a country where almost anything can be cheaply manufactured. Unfortunately, finding factories that can do this reliably and at a high level of quality is a long and costly process which is often further complicated by communication difficulties. TCBC avoids these issues by employing project managers who understand the importance not only of quality, but also communication and customer service.

Contact Tom Lee now for your Printed Circuit Board Assembly manufacturing needs In ShenZhen. 

Email: tomlee@tommyconsulting.com, tomlee_cn@163.com,
WhatSapp/Wechat/Cell Phone: +86 18926401128, Skype: tomleeli
Tel: 86-755-25809219,Fax: 86-755-83256658


Wednesday, August 8, 2018

ShenZhen Electronics Manufacturing Services Company, ShenZhen PCBA and EMS Manufacturer, ShenZhen PCB Assembly Manufacturing



Shenzhen is the epicenter for electronic manufacturing. Here, you can find suppliers for everything from power banks to VR headsets.

The ecosystem is also very open. Even the smallest startup will find suppliers that are interested in working with them. 

Tommy China Business Consulting - Your Reliable EMS Partner Established in 2009 and based in Shenzhen and We have developed a highly qualified group of electronic manufacturers in ShenZhen   TCBC is a full service electronic manufacturing services (EMS) provider. TCBC offers complete solutions from material procurement to printed circuit board assembly (PCBA), box-build, high-level assembly, system level test, configure to order and order fulfilment. A full member of IPC, TCBC specialises in high-quality, low-to-medium volume builds. With diverse product experience and a rapid response to new product introduction (NPI), the company aims to provide its customers with flexible and dependable manufacturing solutions.

Our product (Security PCBA , gps PCBA, Meter PCBA, Car alarm system PCBA, Medical PCBA. Flexible PCB , Circuit Board assembly ,Led Circuit Board. Multilayer PCB, Rigid PCB . Advisement Player PCBA, learning machine PCBA, POS machine PCBA)




China is a country where almost anything can be cheaply manufactured. Unfortunately, finding factories that can do this reliably and at a high level of quality is a long and costly process which is often further complicated by communication difficulties. TCBC avoids these issues by employing project managers who understand the importance not only of quality, but also communication and customer service.

Contact Tom Lee now for your contract electronics manufacturing needs In ShenZhen. 

Email: tomlee@tommyconsulting.com, tomlee_cn@163.com,
WhatSapp/Wechat/Cell Phone: +86 18926401128, Skype: tomleeli
Tel: 86-755-25809219,Fax: 86-755-83256658


Saturday, August 4, 2018

Electronic Products Quality Control in China: By Renaud Anjoran



Renaud Anjoran


Renaud Anjoran is a leading quality assurance expert, based in Shenzhen. Renaud, a regular contributor to the ChinaImportal Knowledge Base, is the co-founder of two companies; Sofeast Ltd – a leading quality inspection agency, and China Manufacturing Consultants (CMC) – a company specialized in improving internal manufacturing and quality assurance procedures from top to bottom. In this article, he explains what you must know about Electronic product quality control when buying from China. Keep reading, and learn more about common quality issues, and how these can be prevented.

Based on your experience, what are the most common quality issues, that Buyers of Electronic products must be aware of?

There are a number of aspects that come to mind when it comes to quality issues with electronic products, maybe the most common being poor workmanship. The effect of poor workmanship could be a premature product failure, intermittent faults with the functionality of the product, decreased performance levels, and even making the product dangerous for users to use (with the potential of electrical shock).

There are different causes for poor workmanship, one of which could be a result of pressure to deliver the goods to a deadline set by the buyer. In that case, the factory would rush the order through consequently making mistakes during production.
Another common quality issue to look out for would be the use of substandard components, which is generally a result of the factory trying to reduce its costs in order to increase profits, all of which is carried out behind the buyer’s back.
Other elements to take into consideration would be:
  • Poor or inadequate design
  • Material quality issues, substandard quality, sub-contracted production, cheaper second-grade components
  • Lack of manufacturing specification
  • Poor product specification
  • Lack of understanding of safety regulations
  • Fake certification
  • Lack of full functionality

What do you think are the main causes of these quality issues?

The main cause of quality issues is the fact that the buyer does not work with the manufacturer closely enough throughout the new product development process. If there is early engagement with suppliers, they are able to act as the buyer’s manufacturing expert. They would be able to provide input during the design and development stages, thus allowing a product that has been designed for manufacture right from the start, as opposed to designing a product in isolation from any suppliers and then expecting perfect products to be produced from day 1. In reality, this will not happen.
Another key success factor is generating a detailed product specification and technical design file for the supplier to work to. This should include product, component and material specifications, technical drawings and instructions, as well as all the test procedures required to test the product either during manufacture or as a final test before shipping.

What sort of tests and quality checks are essential in Electronics manufacturing?

There are a number of key tests that should be carried out on electronic products. They include functionality checks, reliability testing, safety tests and verification (certification may be required depending upon the product and the country that product will be sold in).
a. Functional checks: it is essential that the product manufactured meets the product specification in order to satisfy the customer’s expectations. The functional checks should be carried out against the product specification document.
b. Reliability testing: this is generally carried out on random samples taken from the production line and subjected to various tests. A common method of testing electronic products is HASS (Highly Accelerated Stress Screening). HASS is implemented at the production stage – production samples are subjected to stress testing beyond the product specification limits.
Early product failures on a new product are often attributed to variability within a manufacturing process. Therefore, identifying these potential production failure modes as early as possible is paramount to the success of a product launch and this is where HASS comes into play.
c. Safety Tests and Certification: different countries have different regulations that must be met in order to sell a product within that country. For most consumer electronic products there would be a minimum requirement from a safety testing point of view. A few examples of the other regulations you should consider are:UL Certification for the US market – Product Safety Testing.
  • UL Certification for the US market – Product Safety Testing.
  • FCC for the US market – All commercial electronic devices (unintentional radio-frequency radiators) are regulated by the Federal Communications Commission (FCC). This includes almost every product that contains a microprocessor.
  • CE Mark for the European Union – The CE-marking is the manufacturer’s statement that his product complies with all relevant CE-marking directives. (And make sure not to put this mark on products to which it does not apply.)
  • C-Tick for Australia – The Australian Communications Authority introduced an EMC protection framework requiring EMC compliance for electronic products.
If you are not sure what to do, ChinaImportal can help you identify which regulations you MUST comply.

Should Buyers draft Quality Inspection protocols on their own, or rely on their Inspection partner to do so for them?

It depends on the level of technical knowledge and experience the buyer has. If they have completed a number of product development projects in the past and have experience in drafting out their QC protocols then that would be fine. However, many buyers do not have that depth of knowledge.
In this case, it would be best to work in conjunction with their inspection partner in order to get the correct level of detail into a QC inspection plan. We touched on this in a previous article.

What sort of product information must the Buyer provide to the Inspection company?

I explain the basics below.
  • Product functionality (I assume there is a user manual that can be used by the inspector on a few samples, but what are the few critical functions beyond on/off that need to be checked on many samples?)
  • Safety issues – a quality assurance agency should know this, but you should already have researched it and communicated it to the supplier so you might as well let inspectors know about it.
  • Product appearance (e.g. color, how the components need to fit together…)
  • Labeling on the product and on its packing (including barcodes, shipping marks…)
  • Unit packing (artwork if any, type of material…), inner packing, export packing.

What kind of equipment is needed to carry out the inspection?

I will have to go with the “it depends” answer here. A few basics such as a hi-pot tester (which allows checking if there is current leakage that might hurt the user somewhere on the product) are required in most inspections of electrical products. This type of equipment is usually provided by the factory since it is a bit heavy to carry around. It is shocking that many Chinese manufacturers don’t have the basic safety testing equipment in their premises, but this is the reality here… and it means the buyer needs to confirm what equipment they have in advance.
Let’s take another example. When checking a smartphone, obviously we need the right type of SIM card with a data plan and we are often unable to reproduce the final user’s environment in a Chinese factory. In some cases, the purchaser is better off getting a few samples picked from production during the inspection for performing his own tests.

Is a Pre-Shipment Inspection enough when importing Electronics, or should buyers also consider one or more inspections during production?

I will assume your tolerance to risk and your quality standard are about average compared to European and American importers. I will also assume you import electronics from a new supplier (with whom you have no prior business relationship). Then NO, it is not enough! Let me list a few other services that will get the risk down.
a. Technical process audit (before you issue the order): identifies risks in process controls and quality systems. Suitable for relatively large and professional buyers.
b. Technical quality audit (before you issue the order): identifies risks in quality systems. Suitable for average orders (above 10,000 USD) and most buyers.
c. Inspection before production starts – to check the components before they are embedded in the product. Suitable if there is a substantial risk of cheating on the part of the supplier, or if there is no visibility on who the sub-suppliers are.
d. Inspection during production – before the whole order is finished, try to find issues before it is too late. The problem with a final (pre-production) inspection is that any serious issue means the whole batch needs to be sorted, reworked, and repacked… and this is costly to both sides (in money and in time).

How can Sofeast help importers prevent quality issues when buying Electronics from China?

Since we try to fit the buyer’s needs when it comes to quality assurance, we provide all the services I listed above. With the exception of the technical process audits of EMS (Electronics Manufacturing Services) suppliers, this offer is quite common across all inspection agencies.

Importing Electronics from China: Finding the Right Manufacturer

Posted on March 21, 2018 by in Product Guides


About to import electronics from manufacturers in China? In this product guide, I explain what startups must know about the whole electronics importing process:
1. How to find the right Electronics Manufacturers
2. Importing OEM and Private Label Electronics
3. Prototype Development
4. CE Marking, FCC Regulations & other safety standards
5. Electronics Trade Shows
6. Technology Licensing (i.e., Apple MFi, Bluetooth and Android OS)
Dongguan electronics factory

Electronics Product Development and Customization

Electronics importers have two options: Buy an OEM product that is custom designed from scratch, or import an ODM product, or private label product.
Developing OEM electronics is not for every company, as it requires technical expertise and large funding.
However, Chinese manufacturers don’t offer free product development services. The buyer is always expected to provide all relevant technical specifications, and files, including the following:
  • CAD files
  • PCB design files
  • Source code
  • Print files (.ai format)
For many Electronics Startups it makes more sense to buy an ODM product, essentially a factory standard design that not only be branded, but also customized to a certain degree. Click here to learn more about ODM products when buying from China.

What you Need to Know Before Selecting an Electronics Manufacturer in China

The electronics industry is highly concentrated in China’s southern Guangdong province, in the cities of Shenzhen, Dongguan and Guangzhou in particular.
That being said, components are manufactured worldwide, some by domestic manufacturers, with others being imported from suppliers in Japan, South Korea, Germany and the United States.
Electronics manufacturers, regardless of product, are not all equals. The industry is crowded with everything from minor traders and agents to large scale manufacturers. The size of the average factory is smaller than what many importers assume.
Many factories don’t consist of much more than two to three assembly lines, staffed by 50 to 100 workers. Electronics assembly is not necessarily rocket science, and most components and materials are purchased from subcontractors.
When you select an electronics manufacturer, regardless of whether you buy ODM or OEM, you must consider the following:

1. Regulatory Compliance

Compliance with applicable safety standards and directives (e.g. FCC Part 15, RoHS and the EMC Directive) is mandatory when importing electronics to the United States, the EU, Canada, Australia and many other countries.
Most Chinese manufacturers cannot ensure compliance, and therefore previous compliance (e.g. Test reports and technical documents) must be verified before selection.
Making compliant products’ requires more costly components (e.g. RoHS compliant ICs and solder), as compared to electronics not made according to comply with strict safety standards and regulations.
There are also voluntary standards, for example ETL and UL standards. If you’re based in the United States, I suggest that you try to find a supplier that is already UL listed.

2. Production Capabilities

Some suppliers put together assembled PCBs, casing and other components, purchased directly from subcontractors.
Other manufacturers, however, design and assemble PCBs in house, and some may even refine and cut fabrics, TPU, silicon and other materials used in their products.
Working with the latter type of electronics manufacturer makes it easier to develop new products, and customize existing designs. It also makes it easier to resolve design and functional flaws, which is to be expected when developing new products.

3. Quality Management System (QMS)

A QMS (e.g. ISO 9001:2008) is applied to track quality and prevent quality issues throughout the production process. Quality issues can multiply rapidly, and ruin an entire batch of products, unless testing is carried out continuously on the assembly lines.
Most electronics manufacturers have at least one or two testing stations, but few comply with comprehensive Quality Management Systems, such as ISO 9001:2008.
Spending more time on quality management comes at a cost, therefore resulting in such suppliers quoting slightly higher prices. Yet, a reduced defect rate often makes it a wise investment.

Electrical Safety Standards & Labelling Requirements

As already mentioned, previous compliance is critical when selecting an electronics manufacturer. Most suppliers lack the technical capability, knowledge, experience and subcontractor network required to ensure compliance with European, American and Australian safety standards and regulations.
The ‘compliance rate’ differs between industries, but less than 5% of the suppliers can ensure compliance, in most industries. Suppliers with the capability and experience to ensure said compliance often share the following characteristics:
1. Main markets include the European Union and/or the United States: Many suppliers focus on the domestic Chinese market, while others are geared towards Asia, therefore not giving them an incentive to comply.
2. High registered capital: Suppliers with a large registered capital (> RMB 5,000,000) tend to be more sophisticated than smaller suppliers. Machinery and equipment may also be included in the registered capital.
3. Price: Ensuring compliance with electrical safety standards and substance regulations comes at a cost. Electromagnetic shielding, RoHS compliant components and lead free paint cost more money to procure.
When importing electronics from China, you may need to ensure compliance with more than just one regulation or directive. There are primarily four types of regulations to consider:
  • Electrical safety standards / directives
  • EMC standards / directives
  • Substance regulations (applies to plastic cases and components)
  • Labelling requirements (e.g. CE, WEEE and ‘Made in China’ markings)
Different regulations apply depending on the market, product, usage and its function. The table below lists some common regulations that US and EU importers must keep track of:
MarketRegulation
/ Directive
Description
USFCC Part 15 (Intentional Radiators)
An intentional radiator is a device that is intended to emit radio energy. This scope includes any WiFi and Bluetooth Enabled device.
USFCC Part 15 (Unintentional Radiators)
An unintentional radiator is, in 47 CFR 15.3, defined as any electrical device “operating at over 9000 pulses per second (9 kHz) and using digital techniques”. This definition includes most consumer electronics containing a chip, such as USB enabled devices, even if not equipped with a WiFi or Bluetooth transmitter.
USULUnderwriter laboratories developes safety standards for eletronics and components. While UL compliance is not required by law, most retailers will not buy products that are not UL certified / listed.
USCA Prop 65
California Proposition 65 regulates more than 800 substances in most consumer goods. While CA Prop 65 only applies in California, you must ensure compliance if you are either based on, or selling to consumer in, the state.
EULow Voltage Directive
The LVD applies to electronics, and components, with an input, or output, ranging between 50 to 1000 volts AC, and 75 to 1500 volts DC.
EUEMC Directive
The EMC Directive is applicable to fixed electronic appliances. The purpose is to ensure that electrical equipment don’t interfere with other electronics, and signals, in its proximity.
EURED
The RED (Radio Equipment Directive) is applicable to radio and telecommunication equipment. The scope of regulations includes both final products and individual components. Therefore, products with radio, WiFi and Bluetooth transmitters and receivers are required to comply.
EURoHS
The RoHS directive restricts the amounts of certain substances in electronics, including lead, cadmium and mercury.
EUREACH
REACH regulates substances, including lead and cadmium, in all products sold in the EU.
Labelling requirements, for example FCC marking in the United States, RCM in Australia and the CE mark in the European Union, signal compliance with all applicable regulations.
As such, importers must first confirm which regulations apply, and then verify whether the manufacturer can prove previous compliance.
Neglecting electrical safety regulations, or just hoping for the best, is not an option. Importing non-compliant products is illegal, and for good reasons. Cheap and substandard, therefore non-compliant, electronics can cause electrical and fire hazards.
Take a look at the photo below, which illustrates the difference between an authentic apple charger, and a counterfeit. The latter lacks components, essential to ensure that the charger don’t overload and explode.
Fake phone charger
Photo credit: Gizmodo.com 
Compliance and safety comes at a cost, and is not a matter of negotiation. Some importers assume that the manufacturer is ultimately held responsible, but that is not the case.
It’s up to you to ensure that the items are compliant, and provide the necessary documentation (e.g. Declaration of Conformity and Test Reports) to prove so.

Technology Licensing

If you’re about to import electronic products from China, chances are it will use Bluetooth, Android OS or perhaps the Apple lighting connector.
These technologies are not always ‘open source’ and free for anyone to use. Instead, you may need to pay a license fee, on a per product (SKU) or manufactured unit.
  • Android OS: Free License
  • Apple Device Compatibility: MFi License required for both the Importer and the Manufacturer. Additional license costs for each produced unit.
  • Bluetooth: License fee starting from around US$2500 per product line
Don’t expect to get answers from an electronics manufacturer. They are not license experts.
Before you import electronics from China, you need to do your research and find out which licenses you need before placing the product on the market.

Electronics Trade Fairs in Hong Kong and Mainland China

Canton Fair (Phase 1) (Guangzhou)

  • Consumer Electronics
  • Electronic and Electrical Products
  • Computer and Communication Products
  • Household Electrical Appliances
  • Lighting Equipment

HKTDC Electronics Fair (Hong Kong)

  • Wearables
  • 3D printing
  • IoT
  • Drones & Unmanned tech
  • Audio-visual products
  • Branded electronics
  • Eco-friendly products
  • Packaging & design
  • Navigation systems

electronicAsia (Hong Kong)

  • Computer & Peripherals
  • Hardware
  • Electronic / Electrical Component & Accessories
  • Battery
  • Solar Products
  • Audio Equipment
  • Machinery
  • Video Game Accessories

Globalsources Electronics Fair (Hong Kong)

  • Consumer electronics & accessories
  • Electronics
  • Telecom Products
  • Electronic Games
  • Audio & Video Products
  • Mobile intelligent devices & accessories
  • Mobile intelligent terminals
  • Computer Accessories
  • Accessories for Apple

Do you want to launch your own electronic product?

It can be hard to go from a design drawing to finished product. To help you manage the entire process – from creating a specification, to sampling and quality control – we created a Starter Package for electronic products:
a. Electronic products Manufacturer Lists
b. Product Specification Templates
c. Electronic Label Samples
d. Tutorials, Video Walkthroughs and Task Lists that guide you step-by-step through the entire process
In addition, you can also book quality inspections, lab testing and shipping directly from the platform. Click here to learn more.

OEM Electronics Production in Shenzhen: From BoM to Prototype




Shenzhen is the epicenter for electronic manufacturing. Here, you can find suppliers for everything from power banks to VR headsets.

The ecosystem is also very open. Even the smallest startup will find suppliers that are interested in working with them. Yet, understanding how to practically go from a Bill of Materials (BoM), to a finished product, is a lot more complex than it might first seem.

In this article, Paul W, the founder of Victure China, explains how startups can do exactly that.

Paul, please tell us a bit about yourself and the story behind Victure China

 

I’ve ‘been in the consumer electronics field since 2000. I have worked with major manufacturers such as OEM manufacturers Compaq and HP in quality control, project and sales management and international marketing.

I have helped develop digital cameras, card readers, smart phones, power banks and Bluetooth products. While in these positions I was fortunate to travel the world and interact with other cultures. This prompted me to branch out on my own in 2006 as Victure Inc.

For 2 years my business was flourishing, but the financial crisis of 2008 hit me hard. During the 2 years following 2008 I learned a lot about the good and bad of suppliers and manufacturers.

One experience that went bad was my trusting suppliers to give me the correct product. But no.

By missing an inspection this great customer now had become a hesitant customer, therefore resulting in lost business.

Don’t forget the financial crisis was just around the corner. To compound the problem suppliers would quote you one cost and the next day another.

How can an honest sourcing agent deal with these inaccuracies? There is only one way to fix this major problem, become a China supply chain company.

By starting my own supply chain business of sourcing I could avoid the past problems. With this experience I felt I could help international buyers who have had similar issues.

No more hoping manufacturers would get the product right. By offering buyers quality inspections and follow up throughout the process I could make sure the buyer gets what he actually wants.

In 2012 I hired my first employee, and developed my corporate philosophy of honesty, persistence, professionalism and innovation. This was not just a slogan, but a spirit embedded throughout my members and partners.

If you are up front and honest business will eventually come your way with hard work. With this type of business acumen I have experienced an 80% retention rate of my customers from beginning to end.


Say that I am trying to develop an OEM electronic product for the first time. What do I need to prepare before I even contact suppliers?

1. NDA- The foremost document is an NDA. This is important to protect your own IP’s.
2. A complete contract- to define the requirements of designing, manufacturing, quality, lead time, etc.
3. Drawings & technical specifications- it’s important to get the BoM (bill of materials), schematics of the circuit, CAD of the housing, testing fixture (if possible), encrypted firmware
4. Required documents of the product: Give a clear guidance to the manufacturers on how to treat the finish of the product, the life cycle of the push button, way of packaging, etc.

Which file formats do Shenzhen based suppliers use for the Bill of Materials, PCB diagrams and so on?

For the Bill of materials, using Microsoft Excel [or other spreadsheet programs] is good;
For the PCB (Printed Circuit Board), the most popular software brands used in China are Protel, Cadence, Mentor and Zuken;
For Housing, the most popular software are ProE, Solidworks and AutoCAD-

What are some mistakes you see when startups try to approach OEM electronics manufacturers?

Let me give you a few examples.
1. Startups don’t realize the importance of supply chain management.
Most startups don’t realize this until problems come up after securing the supplier.
Some of them even don’t have a clear idea of who manages the supply chain within their organization.
Very commonly, they come to us to say “the supplier doesn’t understand what we need”, “the component we received is completely wrong”, “the sampling and prototyping schedule is delayed again and again”.
Once these things are realized, it always takes a lot more time, cost and efforts to mark up all the mistakes and rebuild the relationship with existing and new suppliers.
2. They [the Buyer] are in a rush finding out a new manufacturer without doing their due diligence.
One of our customers got a metal stamping factory from north China to produce a small electronics item. When we stepped into their project, we discovered the factory doesn’t have any experience about electronics at all.
It’s always important for any electronics manufacturing project to learn about the supplier’s capabilities, production facilities, quality management system, the main marketing and product strategies, the professionalism of the people and even the mentality of the senior management and owner of the company.
3.  Many startups don’t realize that their designs are not ‘manufacturable’.
There are a lot of startups that make nice designs, but they don’t know there is a gap between designing and manufacturing.
A very close coordination with the engineers of the manufacturers is very important to overcome these problems. It’s very possible there will be many redesigns on the products to fit the manufacturing requirements.
Keep in mind “DFM” (design for manufacturing) is critical.


Shenzhen has everything from automated high tech factories, to simple garage workshops. How do you go about to identify qualified suppliers?

 

Make it simple: sourcing and auditing
First, you have to source enough potential OEM manufacturers to produce your product. There are many ways to source new manufacturers such as Alibaba, Trade Fairs, LinkedIn or industry forums.
An experienced partner or agent would be a great help too, as they could have some existing sources of manufacturers or they have a clear clue on where to find them.
Second, it’s important to design a simple questionnaire.
Next have an initial talk with them to screen out questionable manufacturers and establish a short list 8-10 most potential ones. Visit them one by one by either yourself or a trusted and professional 3rd party company.
During this step you should design a more detailed list of questions for both the factory management and engineers of the manufacturers.
The list of questions should include at least basic company information (Chinese business license, organization structure, etc), Manufacturing Facilities (production lines, equipment, daily maintenance, etc), Quality Control System (system, testing equipment, knowledge of QC staff, etc) as well as the business strategy of the top management or owner.
The last point is critical and it would help you not only with the current product, but also your future product development and manufacturing process. Imagine if you find out a company that loves your ideas and business strategy.
You could become one of their top priorities and thus gain huge resources for your business.

For complex products, I always recommend our customers to meet suppliers face to face. What kind of questions should importers ask when sitting down with the engineers?

 

The following questions will help to understand if the manufacturers are professional in engineering-
1. What’s the process of new product introduction (NPI) of your company and the structure of the NPI team (Mechanical Engineering, Electronics Engineering, Software Engineering and Project Management)?
2. What kind of engineering and redesigning support can you give?
3. How many years of experience do you have in product and project management? What kind of products have you worked on?
4. What kind of design changes do you see necessary with our existing product to fit into mass production, and why?
5. What do you think about the key manufacturing parameters and testing points of our product?

Do the OEM electronics manufacturers normally expect buyers to have a functional prototype when they come to them?

 

Yes, the most of the OEM manufacturers are strong in mass production or production engineering, but very weak in designing new products and sales and marketing especially for the overseas market.
A functional prototype will give a lot more confidence to the OEM manufacturers in working with you. This way they believe you’ve done a lot of preliminary work and business is on the way.
On the other hand, product designing (different from production engineering) is not the strength of most of the manufacturers.

How does the product development process normally work for OEM electronics?

 

Let me explain in writing below:
1. Functional Prototype
2. Product Definition (features, technical specifications, testing standards, packaging)
3. Product Development Planning (Electronics Hardware, Mechanical Engineering, Software & Packaging)
4. OEM manufacturer sourcing & auditing
5. Sample development & testing (by manufacturer)
6. Pilot Production

How much time does it take to get a fully functional prototype?

 

It usually takes 4-5 weeks to create a fully functional prototype for products like power bank, Bluetooth speaker, charger, but a more complex product may require more time.
The communication and coordination with the manufacturer will play a key role in determining the time before making the prototypes.

Do you have any cost examples?

 

The functional prototype usually cost $2000-3000 such as power bank, Bluetooth speaker, charger, but a more complex product may cost more.
This is generally negotiable with the manufacturers. You may get a good rate if they agree with your product and marketing strategy, and if they believe you could bring great business for them.