Choosing a suitable PCB assembly supplier is an important decision for electronics manufacturing enterprises, start-ups, engineers ... China is a major base for global PCB and PCBA manufacturing, providing high-quality, cost-effective, and fast-delivery services to the automotive, medical equipment, communication, consumer electronics, industrial automation, and other industries around the world.
Next, this article will introduce five representative Chinese electronic PCB assembly suppliers (in no particular order): PCBasic, Avary Holding, Unimicron, Shennan Circuits, and Kinwong. Each of these companies has its own focus. Let's take a look together!
1. PCBasic
PCBasic is one of the leading PCB and PCBA suppliers in China. The company offers a one-stop electronic manufacturing service, covering all aspects such as PCB production, SMT assembly, DIP soldering, component procurement, flying probe testing, functional testing, three-proof coating, finished product assembly, and logistics for shipment. With over 15 years of industry experience, PCBasic integrates manufacturing and supply chain into a highly efficient and traceable production system. Through the digital systems of ERP + MES + WMS + CRM, the company records the entire process of materials, production, testing, shipment, and customer order status.
The core advantages of PCBasic
Production Capacity
9 fully automated high-speed SMT lines
Nitrogen/argon reflow soldering, 3D SPI, online & offline AOI
X-ray for BGA/QFN, flying probe test, ICT test platform
Supports 01005 components and 0.25 mm pitch BGA/QFN
Handles high-precision ICs, odd-form components, mixed assembly
PCB Manufacturing
1–32 layer FR4, HDI, high-frequency, high-speed, metal-based PCBs
Supports blind/buried vias and special materials
Surface finishes: ENIG (gold), OSP, HASL, hard gold, immersion silver, etc.
Minimum trace/space: 3/3 mil
Minimum drill hole: 0.1 mm
Supply Chain & Component Sourcing
Long-term partnerships with Digi-Key, Mouser, Arrow, LCSC
Independent IQC lab for incoming quality inspection
Checks appearance, packaging, ESD, model, batch codes, electrical performance
Supports turnkey, hybrid (partial parts), or consigned materials
Quality System
Certified: ISO9001, ISO13485, IATF16949
Complies with IPC-A-610 standards
FAI first article inspection at key stages
SPC process monitoring and record retention
Full traceability for each production batch
2. Avary Holding
Avary Holding is one of the largest PCB manufacturing enterprises in the world, and it is also a crucial force in China's electronic manufacturing supply chain. Although its core business is PCB design and production, Avary also collaborates with well-known EMS companies in fields such as smart terminals, communication equipment, and automotive electronics, providing circuit board manufacturing and some PCBA services.
Core Advantages of Avary Holding
Large-scale production capacity
The global PCB production capacity is leading, covering areas such as smart phones, servers, wearable devices, and network communications.
It has production bases in Shenzhen, Qinhuangdao, Huai'an and India, forming a global layout.
The annual output has consistently ranked among the top in the global PCB industry.
Major Customers and Partners
One of the PCB suppliers, providing products to companies such as Apple, Huawei, Samsung, Xiaomi, and Dell.
Has long-term cooperation with global EMS manufacturers such as Foxconn, Pegatron and Flextronics
Many of our clients are Fortune 500 electronics companies.
Advanced PCB Technology
Specialized in high-density interconnection (HDI) boards, rigid-flex boards, high-frequency/high-speed boards and automotive electronic boards
The product is used in high-performance fields such as 5G, Wi-Fi 6, servers, and automotive electronics.
Offer high-end solutions such as Mini LED, SLP, Any-Layer HDI, and micro-hole technology.
Quality and Reliability System
Obtained certifications such as ISO9001, IATF16949, ISO14001, and ISO45001.
Equipped with a reliability laboratory, conducting tests such as thermal shock, salt spray, bending, and impedance to verify the performance.
By adopting digital manufacturing, laser drilling, AOI inspection, LDI exposure and other processes, traceable production can be achieved.
Although Avary is not a traditional PCBA supplier, it still stands out as one of the major global electronic PCB manufacturers. Its technical achievements in manufacturing reliability, material control, and miniaturized circuit design provide a stable foundation for the subsequent PCB Assembly process.
3. Unimicron
Unimicron is one of the world's leading manufacturers of PCB and IC substrates. Similar to Avary Holding, Unimicron mainly focuses on PCB manufacturing, but with its strong capabilities in HDI boards, packaging and loading boards, and automotive electronic boards in high-tech fields, it is also widely regarded as an important member of the global high-end electronic manufacturing supply chain.
Core Advantages of Unimicron
Main Business
PCB manufacturing: HDI boards, multilayer HDI, rigid-flex combined boards, high-frequency/high-speed boards
IC substrate: Used for packaging CPUs, GPUs, 5G chips, and AI chips.
The product is applied in high-end fields such as smart phones, servers, automotive radars, and semiconductor packaging.
Technical Features
It can produce 2 to 20 layers of high-density interconnection boards and BT/ABF substrate carrier boards.
The minimum line width and spacing can reach 10μm / 10μm.
Using laser drilling, LDI exposure, and SAP/MSAP precision circuit processing
Service Industry
Consumer electronics: Mainboard suppliers for brands such as Apple, Huawei, and Samsung
Semiconductor packaging: Provides IC carrier boards for TSMC, Intel, MediaTek, etc.
Automotive electronics and communication equipment: Meeting automotive-grade and high-speed signal requirements
Quality System
Having obtained certifications such as ISO9001, IATF16949, and ISO14001
Many PCBA suppliers and brand customers (such as Apple, Tesla, and NVIDIA) regard Unimicron as a core strategic supplier.
4. Shennan Circuits
Shennan Circuits Co., Ltd. is one of the leading high-end PCB manufacturing enterprises in China, and it is also one of the few domestic manufacturers that possess the full-process capabilities of PCB manufacturing + IC carrier board + PCB assembly and testing.
Core Advantages of Shennan Circuits
Integrated Manufacturing System
Business coverage: PCB production, IC substrate manufacturing, SMT assembly, DIP soldering, functional testing and system installation
The factory layout is in Shenzhen, Wuxi, Huizhou and Europe, and it can supply products globally.
Supporting pilot production, small-batch verification to mass production, meeting the requirements of OEM/EMS customers
Advanced PCB & Substrate Technologies
Main products: Multi-layer PCB, HDI, Rigid-Flex Board, High-Speed/Frequency Board and Packaging Base Board
Applied to 5G base stations, server motherboards, aerospace equipment, medical electronics and vehicle control systems
Master key technologies such as any-layer HDI, laser drilling, LDI exposure, embedded components, and precise impedance control.
PCB Assembly & Testing Capabilities
Offer assembly services including SMT surface mounting, component insertion soldering, reflow soldering, and selective wave soldering.
Equipped with flying probe testing, ICT testing, functional testing (FCT) and the ability to customize test fixtures
It is one of the high-reliability suppliers in China with dual qualifications for PCB and PCBA.
Quality Management & Certifications
Having obtained certifications such as ISO9001, IATF16949, ISO13485
The product complies with IPC-A-600/610, UL, RoHS and REACH standards.
Complete reliability laboratory and a full-process traceability system.
Main Application Fields
Communication & 5G equipment
Server & Data Center
Automotive Electronics
Aerospace & Medical Electronics
5. Kinwong
Kinwong Electronics Co., Ltd. is one of the well-known PCB manufacturing enterprises in China. It enjoys a high market share in the fields of consumer electronics, automotive electronics, communication equipment and industrial control. The company focuses on core products such as multilayer boards, HDI and high-frequency boards, and has gradually expanded its business to SMT assembly services. It holds a representative position in the domestic PCB and electronic manufacturing supply chain.
Core Advantages of Kinwong
PCB Manufacturing Strengths
Mainly produce FR4 multilayer boards, HDI boards, rigid-flex combined boards, high-frequency/high-speed boards, aluminum substrates and ceramic substrates.
The number of PCB layers can reach 1 to 20. It supports through-holes/blind holes, high Tg, and high reliability automotive-grade PCBs.
It is widely used in products such as mobile phone mainboards, chargers, industrial controllers, power supplies, and motor control systems.
PCB Assembly Services
Although its core business is PCB manufacturing, Kinwong also offers services such as SMT soldering, DIP component mounting, and PCB assembly and testing.
Supports small-batch prototyping and mass production, suitable for OEM/ODM integrated manufacturing requirements
Some factories have introduced automated soldering lines, SPI, AOI and functional testing procedures, providing customers with board card + assembly services.
Industries Served
Consumer Electronics
Automotive Electronics
Communication & IoT
Industrial & Power Systems
Quality & Certifications
Through ISO9001, IATF16949, ISO14001, ISO45001, UL and other systems
Production complies with IPC-A-600/610, RoHS, REACH standards and automotive electronics AEC requirements.
Carry out AOI inspection, ICT, functional testing (FCT) and critical process SPC control
Provide traceable production records and sample retention management for automotive and industrial customers
Conclusion
China still holds a global leading position in the field of PCB assembly suppliers and PCB assembly service providers. Companies such as PCBasic, Avary Holding, Unimicron, Shennan Circuits and Kinwong represent the strength and diversity of China's electronic PCB assembly suppliers. From prototype PCB assembly suppliers, fast delivery PCB assembly suppliers to large-scale wholesale PCB assembly service providers, these companies help various industries accelerate their innovation pace.
About PCBasic
Time is money in your projects – and PCBasic gets it. PCBasic is a PCB assembly company that delivers fast, flawless results every time. Our comprehensive PCB assembly services include expert engineering support at every step, ensuring top quality in every board. As a leading PCB assembly manufacturer, we provide a one-stop solution that streamlines your supply chain. Partner with our advanced PCB prototype factory for quick turnarounds and superior results you can trust.
