Contract Manufacturers in China – Expert-Reviewed List (2025 Update)

These days, it’s pretty easy to find article after article stating that manufacturing in China is “declining.” There is certainly some truth in that. Vietnam, Thailand, India, Mexico, and others have attracted a lot of investment, and they’re now very realistic options for certain categories of products and volumes.

However, for relatively complex electronic or electromechanical products, especially when time-to-market is critical and assembly requires a lot of labour and process control, South China is still one of the best places on earth to get things made. That’s why many consumer electronics, IoT devices, wearables, and other smart products are still designed and built here.

This article was originally published in 2020 and is updated annually. We periodically review and refresh the list of contract manufacturers (CMs) based on what we see on the ground: who is still active, which factories are investing in engineering and process control, and which ones are a realistic fit for foreign buyers.

If you have a new manufacturing project for a relatively complex product and are looking for a contract manufacturer in China, the factories listed below are real companies in South China that we know reasonably well, not paid listings or sponsored placements. They are presented in no particular order, and each has different strengths, so don’t assume there is a single “best” option for everyone.

In this updated 2025 edition, you’ll find:

• A curated list of CMs in South China that handle electronics and/or electromechanical products
• Key facts about each factory (size, capabilities, typical products)
• Context to help you decide whether a Chinese CM is right for your project, or whether you should look elsewhere

Use this list as a starting point, not a replacement for due diligence. You will still need to qualify each manufacturer, audit them, and negotiate clear terms before you commit.

Originally published: March 12, 2020. Last updated: December 2025.

How we selected these contract manufacturers

This is not a paid directory or sponsored list. The factories included here are contract manufacturers in South China that we have come across through our consulting work, factory visits, and ongoing involvement in the manufacturing ecosystem.

When deciding which companies to include or remove, we look at factors such as:

• Type of work they actually do
  We focus on contract manufacturers (CMs) that assemble products to the buyer’s specification, often combining electronics, PCBA, and plastic/metal enclosures. Pure trading companies or general wholesalers are not included.
• Experience with relatively complex products
  We give priority to factories that have a track record with electronics, electromechanical products, and smart/connected devices (IoT, wearables, etc.) rather than very simple or purely mechanical items.
• Process control and quality systems
  We pay attention to whether the factory has documented processes, basic quality systems, and in-house testing capabilities that are appropriate for the types of products they make.
• Transparency and communication
  We look for factories that are reasonably open about their operations and can communicate with foreign buyers in a way that supports long-term cooperation (rather than just focusing on grabbing orders).
• Fit for foreign buyers
  Many factories in China are excellent at serving domestic customers but are not organized or interested in working with overseas buyers. We focus this list on factories that are realistically usable by importers.

The list of suggested contract manufacturers in South China

In no particular order, here are some contract manufacturers in South China that you might like to consider for relatively complex electronic or electromechanical products.

Agilian Technology (东莞市安集利安科技有限公司)

Agilian is Western-owned, provides full transparency on component suppliers, and helps bring a new product to market fast. It makes wearables, fitness and pet accessories, IoT and other connected products.
(Full disclosure: I am a part-owner of Agilian, and I have helped set up their quality systems.)

• Number of employees: 300+
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: electronic and mechanical products

Location: Chang’an district, Dongguan city, PRC

Dongguan Wiseally Industrial co.,Ltd ( 东莞威雅利实业有限公司 )

Wiseally concentrates on PCBAs, multifunctional modules and finished electronic products.

• Number of employees: 1800
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronic components – usually B2B

Location: Chang’an district, Dongguan city

Seveco Global Limited  (  鴻業環球有限公司  )

Seveco provides thermostats, headsets, RFID readers, and RF devices amongst other devices, and also make other electronics.

• Number of employees: 680
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronics

Location: Tuen Mun, Hong Kong (exact factory location unknown)

Shenzhen Epower Hardware Industrial Co.,Ltd  ( 东莞意普五金实业有限公司)

Epower produces consumer electronics and consumer goods and have a wide variety of machining options in-house, such as CNC machines, plastic injection molding, and stamping machines.

• Number of employees: 260
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Varied consumer electronics and other goods

Location: Fenggang district, Dongguan city, PRC

Dongguan Tutamen Metal Work Co., Ltd  ( 东莞彩美金属制品有限公司 )

Tutamen provide metal fabrication, CNC machining, injection molding and produce products and components from metal and plastic for many industries.

• Number of employees: 200
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Varied – metal machined and plastic mainly

Location: Tangxia district, Dongguan City, PRC

UNI Precision Industrial Ltd ( 渝利電子制品有限公司  )

UNI precision Industrial provides a full turnkey PCBA to complete box build, metal stamping, CNC Turret press punching, and plastic molding & injection in house.

• Number of employees: 300+
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronics

Location: Hengli district, Dongguan city, PRC

RSP Technology Co., Ltd ( 深圳市瑞思博科技有限公司  )

RSP technology is a Shenzhen-based factory specialising in electronics and their ancillary products. They provide turn-key manufacturing, plastic injection products, silicone keypad, membrane switches including outdoor products, F&B, electronics, and many more.

• Number of employees: 85
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronics

Location: Longgang district, Shenzhen city, PRC

Shenzhen Zowee Co., Ltd ( 深圳市卓翼智造有限公司 )

RSP technology is a Shenzhen-based factory specialising in IoT, mobile technology, and telecoms products.

• Number of employees: 8500
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronics, telecoms

Location: Nanshan district, Shenzhen city, PRC

Shenzhen Kenvox Technology Co. Ltd (深圳市铠沃科技有限公司)

Kenvox has helped clients to develop many electronic products, such as 3D printers, roasting machines with a display, etc, and some accessories for camera cases.

• Number of employees: 600
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Electronics

Location: Chang’an district, Dongguan city, PRC

MediConcepts Ltd ( 醫科創建有限公司 )

MediConcepts produces medical devices and equipment, including metered-dose inhalers and disposable colonoscopes.

• Number of employees: 60
• Mechanical products assembly: yes
• Electronic products assembly: yes
• Main market: Medical products

Location: Central, Hong Kong (factory in Longgang district, Shenzhen city, PRC)

Dakoko Precision Components (Pinghu) Co.,Ltd. ( 帝柯精密零部件（平湖）有限公司 )

Since 2008, German-owned Dakoko’s focus has been on complex turned parts made from steel, stainless steel, or special materials and they provide contact manufacturing, as well as looking after assembly and logistics for customers, too.

• Mechanical products assembly: yes
• Electronic products assembly: no
• Main market: CNC machined metal parts (such as hydraulic components, union nuts and cutting rings, shafts, sleeves, and bushings)

Location: Jiaxing City, Zhejiang Province, PRC

Advantages of dealing with a contract manufacturer directly

By working directly with a contract manufacturer in China (rather than only through trading companies or OEMs/ODMs), you can often gain several advantages:

• You, the buyer, generally owns the design and tools.
• You can often gain visibility over the supply chain.
• Better control of the situation as a whole – cost, quality, and timing.
• Switching from one CM to another is a relatively standard process.
• The CM generally accepts a certain amount of manufacturing-related liability (i.e. not related to design defects).

(We wrote about this in-depth in OEM, ODM, Contract Manufacturers: Choose your China Supplier Wisely, and we discussed your Chinese supplier options in this episode of our podcast: What are your 4 options when sourcing suppliers in China? [Podcast])

How about help to design your new product?

If it’s too soon for you to work with a contract manufacturer yet (for example, your concept isn’t frozen or your design files aren’t ready), your priority might be product design and engineering rather than production. In that case, these resources will help you prepare before you approach any CM:

• 6 Tips To Nail Your Hardware Product’s Concept BEFORE Engaging A Design House
• 18 Electronic Product Design Firms For ‘Made-in-China’ Products

Do you need help to source the right contract manufacturers in China?

If you’d like expert help to shortlist and qualify contract manufacturers for your specific project, my team and I can assist. Tell us more about your product, expected order quantities, target launch date, and any particular requirements (e.g. certifications, country of import) by filling the contact form, and we’ll come back to you with suggestions.

FAQs about contract manufacturers in China

1. What is a contract manufacturer in China?
   A contract manufacturer (CM) is a factory that assembles your product to your specification using parts and materials that they purchase (often from their own approved suppliers). You typically own the design and the tooling, and they are responsible for setting up the processes, producing, and testing the goods according to an agreed quality standard.
2. When does it make sense to use a Chinese contract manufacturer instead of an OEM or ODM?
   A CM is usually a good fit when you own or control the product design and don’t want the factory to sell it to others, you need relatively high volumes or repeated batches, and you want more visibility and control over the supply chain, testing, and quality systems than a typical OEM/ODM will offer.
3. Are these Chinese contract manufacturers suitable for small startups?
   Some are, and some are not. Large CMs tend to prefer higher, more stable volumes and organized customers; smaller or mid-sized CMs may be more flexible but have limits on how low they can go on quantities.
4. What types of products are best suited to Chinese contract manufacturers?
   China is particularly strong for consumer electronics and IoT devices, wearables, fitness and pet tech, and products that combine PCBA, software/firmware, and plastic/metal enclosures, especially when you need to move from prototype to mass production relatively quickly.
5. How should I vet a Chinese contract manufacturer before placing an order?
   At a minimum, do basic company verification, audit the factory (on-site or remote), review a sample or pilot run with clear acceptance criteria, and negotiate a manufacturing agreement covering quality, IP, tooling ownership, and payment terms.
6. Can I work with more than one contract manufacturer in China for the same product?
   Yes, many buyers eventually set up dual sourcing: two CMs that can both produce the same product, which can reduce risk and increase leverage, but requires strong document control, testing, and change management. In most cases, one of the CMs is in another country for risk reduction.

A note on this post…

This list is reviewed periodically. We may remove manufacturers that close, pivot away from contract manufacturing, or no longer match these criteria, and add a small number of new CMs that we have vetted and that we believe are relevant to our readers.

For full transparency, note that Agilian Technology is part of the same group of companies as this blog’s author. It is included here because it fits the same criteria as the others (and its strengths and limitations are described as objectively as possible), but you should still apply your own due diligence to any factory on this list.