Printed circuit board (PCB) assembly is the process of soldering and assembling electronic components onto fabricated PCBs to create functional boards and assemblies. The proliferation of electronics across all industries has fueled massive demand for PCB assembly services. This has driven expansive growth of electronics manufacturing services (EMS) providers across Asia, especially in China which now dominates electronics assembly.

Many of the world’s foremost PCB assembly companies operate state-of-the-art facilities in China to manufacture high-tech consumer devices, telecom gear, automotive electronics, medical equipment, and industrial control systems at large volumes. Here are 20 of the leading PCB assembly manufacturers in China:

1. RayMing Technology

• Headquarters: Shenzhen, Guangdong
• Founded: 2001
• Capabilities: SMT, Prototype to volume contract manufacturing, box build, testing
• Certifications: ISO 9001, ISO 14001, ISO 13485
• Volume Capacity: >1,000,000 boards/month
• Clients: Automotive, industrial, medical, communications

2. Pegatron

• Headquarters: Shanghai
• Founded: 2008
• Capabilities: High-mix consumer electronics assembly
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >200,000,000 units annually
• Clients: Major brands including Apple, Microsoft, Sony

3. Flex

• Headquarters: Zhuhai, Guangdong
• Founded: 1969
• Capabilities: HDI, automotive, aerospace, medical PCB assembly
• Certifications: ISO 13485, ISO 9001, AS9100, TS 16949
• Volume Capacity: >16,000,000 boards/month
• Clients: Leading OEMs across industries

4. Jabil Circuit

• Headquarters: Guangzhou, Guangdong
• Founded: 1966
• Capabilities: High-mix, low-volume complex assemblies
• Certifications: ISO 9001, ISO 14001, ISO 13485
• Volume Capacity: >5,000,000 boards/month
• Clients: Top brands across sectors

5. Benchmark Electronics

• Headquarters: Suzhou, Jiangsu
• Founded: 1979
• Capabilities: NPI, test development, supply chain
• Certifications: ISO 9001, ISO 13485, AS9100
• Volume Capacity: >5,000,000 boards/month
• Clients: Industrial, medical, aerospace/defense

6. Sanmina Corporation

• Headquarters: Suzhou, Jiangsu
• Founded: 1980
• Capabilities: High-mix, low-to-mid volume assembly
• Certifications: ISO 9001, ISO 13485, AS9100
• Volume Capacity: >4,000,000 boards/month
• Clients: Medical, industrial, computing, communications

7. Celestica

• Headquarters: Suzhou, Jiangsu
• Founded: 1994
• Capabilities: High complexity system assembly
• Certifications: ISO 9001, ISO 13485, AS9100
• Volume Capacity: >3,000,000 boards/month
• Clients: Industrial, aerospace, semiconductor, telecom

8. USI Electronics

• Headquarters: Shenzhen, Guangdong
• Founded: 1980
• Capabilities: HDI, flex, box build assembly
• Certifications: ISO 9001, ISO 13485, IATF 16949
• Volume Capacity: >3,500,000 boards/month
• Clients: Automotive, industrial, medical, electronics

9. Compal Electronics

• Headquarters: Kunshan, Jiangsu
• Founded: 1984
• Capabilities: High-volume consumer devices
• Certifications: ISO 9001, ISO 14001, QC 080000
• Volume Capacity: >12,000,000 boards/month
• Clients: Notebook PCs, smartphones, tablets

10. Quanta Computer

• Headquarters: Songjiang, Shanghai
• Founded: 1988
• Capabilities: High-volume servers, data center hardware
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >15,000,000 boards/month
• Clients: Data center computing OEMs

11. Inventec

• Headquarters: Nanjing, Jiangsu
• Founded: 1983
• Capabilities: High-mix consumer device assembly
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >6,000,000 boards/month
• Clients: Smartphones, laptops, wearables

12. Hisense Broadband Multimedia Technologies

• Headquarters: Qingdao, Shandong
• Founded: 1988
• Capabilities: High volume consumer electronics
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >5,000,000 boards/month
• Clients: Televisions, displays, home appliances

13. BYD Electronic International

• Headquarters: Dongguan, Guangdong
• Founded: 1995
• Capabilities: High-mix, HDI, automotive assembly
• Certifications: ISO 9001, ISO 14001, IATF 16949
• Volume Capacity: >3,000,000 boards/month
• Clients: Automotive OEMs and Tier 1 suppliers

14. Shenzhen Kaifa Technology

• Headquarters: Shenzhen, Guangdong
• Founded: 2003
• Capabilities: High-complexity, low-volume assembly
• Certifications: ISO 9001, ISO 13485, ISO 14001
• Volume Capacity: >1,000,000 boards/month
• Clients: Industrial, medical, communications

15. Shenzhen Zowee Technology

• Headquarters: Shenzhen, Guangdong
• Founded: 2003
• Capabilities: HDI, automotive, industrial assembly
• Certifications: ISO 9001, IATF 16949, ISO 14001
• Volume Capacity: >1,000,000 boards/month
• Clients: Automotive, industrial, and consumer

16. New Kinpo Group

• Headquarters: Shanghai
• Founded: 1973
• Capabilities: High-volume consumer electronics
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >12,000,000 boards/month
• Clients: Major brands across industries

17. Wingtech Technology

• Headquarters: Shanghai
• Founded: 2006
• Capabilities: High-volume smartphones and tablets
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >15,000,000 boards/month
• Clients: Leading mobile computing brands

18. Desay Technologies

• Headquarters: Shenzhen, Guangdong
• Founded: 1991
• Capabilities: High-mix consumer electronics
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >3,000,000 boards/month
• Clients: Consumer electronics brands

19. Biel Crystal Manufactory

• Headquarters: Dongguan, Guangdong
• Founded: 2001
• Capabilities: High volume smartphones and other mobile devices
• Certifications: ISO 9001, ISO 14001, OHSAS 18001
• Volume Capacity: >20,000,000 boards/month
• Clients: Leading smartphone OEMs

20. Venture Corporation

• Headquarters: Shanghai
• Founded: 1984
• Capabilities: Low-to-mid volume, high-mix assembly
• Certifications: ISO 9001, ISO 13485, ISO 14001
• Volume Capacity: >500,000 boards/month
• Clients: Networking, healthcare, industrial

Conclusion

This compilation highlights major PCB assembly manufacturers in China capable of delivering high volumes of consumer gadgets as well as lower volume, highly complex assemblies across a diverse range of end markets. With its unparalleled manufacturing ecosystem and rapid scale-up abilities, China will continue playing a vital role in global electronics production.

FQA

What are some key differences between PCB fabrication and PCB assembly?

PCB fabrication involves creating the bare board while assembly is the process of soldering and mounting components onto the fabricated PCB.

What are the main techniques used in high volume PCB assembly?

Mass assembly relies heavily on surface mount technology where components are placed and soldered onto pads on the PCB surface as opposed coil leaded through-hole parts.

What trends are influencing PCB assembly manufacturing?

Key trends include increasing automation, demand for miniaturization, higher densities, shrinking component sizes, environmental compliance, and continuous quality improvement initiatives.

Why have so many electronics assembly providers located manufacturing in China?

Benefits include low operating costs, availability of skilled labor, proximity to upstream and downstream supply chain partners, favorable government policies, and access to the domestic Chinese market.

What are some of the major steps involved in PCB assembly?

Main steps include SMT pickup and placement, solder paste printing, component placement, reflow soldering, through-hole insertion, wave soldering, testing, inspection, and conformal coating. Robotic automation enables high-precision, high-speed production.