In modern manufacturing, wire harnesses are often referred to as the “nervous system of equipment” and are widely used in industries such as automotive, new energy, industrial automation, medical, rail transportation, and aerospace. As global supply chains continue to shift and optimize, an increasing number of companies are seeking reliable wire harness manufacturers to ensure product reliability and compliance.
China, with its well-established industrial chain, cost advantages, and continuously improving quality systems, is increasingly becoming a key source for global wire harness procurement. This article will take you on an in-depth exploration of the top 10 wire harness manufacturers in China 2026, helping procurement and engineering teams quickly identify the most suitable partners.
Why use wire harnesses?
In modern industrial and electronic systems, wire harnesses have become indispensable key components. Their primary function is to organize multiple wires, cables, connectors, terminals, and sheaths into a structured assembly, enabling efficient, safe, and reliable transmission of power and signals. Compared to the scattered wiring of individual cables, using wire harnesses offers the following significant advantages:
1. Improved wiring efficiency and neatness
If a system requires dozens or even hundreds of wires, wiring each one individually would be extremely complex and prone to errors. A wire harness bundles multiple cables into a single unit, resulting in clear and organized wiring that reduces installation time and simplifies future maintenance.
2. Enhanced safety and reliability
Wire harnesses typically include insulation sleeves, corrugated tubes, and overmolding/potting protection to prevent wires from wearing out or short-circuiting due to friction, vibration, or environmental factors.
Additionally, industrial wire harnesses are manufactured and tested according to standards such as IPC/WHMA-A-620, UL, SAE, and MIL-Spec, ensuring reliability in harsh conditions such as high temperatures, humidity, and vibration.
3. Space-saving and optimized design
Through reasonable harness design, limited space can be effectively utilized, such as:
- Complex multi-branch wiring in automotive engine compartments
- Highly flexible drag chain cables in industrial robot joints
Harnesses not only save space but also reduce wiring crossings and electromagnetic interference (EMI).
4. Reduced manufacturing and maintenance costs
Manufacturing side: Mass-producing harnesses on assembly lines reduces labor costs and assembly error rates.
User end: When wiring harnesses fail, the entire component can be replaced directly without needing to inspect each individual wire, saving repair time and costs.
5. Adapt to diverse industry and operational requirements
Different industries and scenarios have varying demands on electrical systems:
- Automotive/New Energy → High-voltage power wiring harnesses requiring high-temperature resistance and vibration resistance
- Industrial Automation/Robotics → High-flexibility wiring harnesses capable of withstanding millions of bends
- Medical → Low noise, high signal integrity, compliant with ISO 13485
- Railway Transportation → Flame-retardant, low smoke, halogen-free, compliant with EN45545
- Aerospace → High-temperature, radiation-resistant, compliant with AS9100, MIL-DTL
The customizable nature of wiring harnesses ensures compliance with special requirements in various environments.
Top 10 Wire Harnesses Manufacturers in China 2026
| Company | HQ / Plant Locations | Certifications | Core Capabilities | Typical Applications | Strengths & Limitations |
|---|---|---|---|---|---|
| Linkwings | Shanghai, China; Shenzhen / EU & NA service centers | UL, IATF16949, ISO9001, IPC/WHMA-A-620 Class 3 | Custom harnesses, overmolding/encapsulation, multi-branch wiring, shielding, high-temp wires | Industrial robots, Medical CT/MRI, Railway cabinets, Energy storage | Strong in small-batch & fast delivery, global experience; large-scale mass production still expanding |
| Desay SV Harness Division | Huizhou, Shenzhen, Chongqing | IATF16949, ISO9001, UL | High-voltage battery harnesses, waterproof/insulated assemblies, HV connectors | NEV battery systems, charging stations | Deep expertise in EV battery harnesses; limited cross-industry coverage |
| Foryou Group Harness Division | Huizhou, multiple sites in China | IATF16949, ISO9001, UL | Vehicle wiring architecture, high-speed harnesses (Ethernet/CAN), E/E integration | Automotive main harnesses, in-vehicle networks | Strong in OEM integration; weaker in industrial & medical |
| Aerospace Electrical Harness Division | Changsha, aerospace/defense bases | AS9100, ISO13485, MIL-DTL | Aerospace-grade harnesses, high-temp PTFE/PI, anti-radiation, vibration-proof | Satellites, spacecraft, military communication | Strong aerospace/military reliability; high cost, long lead time, not suitable for mass civilian use |
| Great Wall Motors Harness Division | Baoding, nationwide plants | IATF16949, ISO14001, UL | Vehicle wiring systems, EV HV harnesses, large-scale automated production | Automotive main harnesses, EV drivetrains | Strong in scale & cost; limited flexibility for customization |
| CATL Harness Division | Ningde, China; supporting plants | IATF16949, ISO9001, UL | Battery pack HV harnesses, ESS wiring, high-power connector integration | EV batteries, energy storage stations | Strong in battery/ESS sector; narrow application scope |
| Shanghai Electric Harness Division | Shanghai, East & South China | ISO9001, ISO14001, EN45545 | Control cabinet harnesses, high-current cables, railway flame-retardant harnesses | Railway, industrial automation, energy equipment | Strong in industrial/railway; limited international customer base |
| CRRC Zhuzhou Harness Division | Zhuzhou, Hunan | ISO9001, EN45545, IRIS | High-reliability railway harnesses, LSZH materials, control cabinet wiring | High-speed rail, metro, railway signaling | Railway-specific strength; limited cross-industry scope |
| BYD Electronics Harness | Shenzhen, Guangdong/Shaanxi | IATF16949, ISO9001, UL | Vehicle harnesses, battery pack harnesses, automated testing | New energy vehicles, ESS, industrial electronics | Dominant in NEV harness scale; limited 3rd-party customer base |
| Luxshare Precision Harness Division | Dongguan HQ, Jiangsu/ Vietnam plants | IATF16949, ISO13485, AS9100, UL | High-speed harnesses (USB-C/HDMI/Ethernet), precision medical harnesses, aerospace harnesses | Consumer electronics, automotive electronics, medical, aerospace | Strong in precision/high-speed harnesses; less experience in large-scale heavy industrial harnesses |
1. Linkwings (Linkwings Wire Harness, China)
Company Overview:
Headquartered in the Yangtze River Delta region of China, the company operates a modern manufacturing facility in Suzhou and an engineering and technology center in Shenzhen. It also maintains sales and engineering support teams in Europe (Germany) and North America (United States). Its services cover the Asia-Pacific, Europe, and North America regions, with clients spanning industrial automation, healthcare, rail transportation, and new energy sectors.
Key Certifications:
UL (E-file Certified Wires), IATF 16949, ISO 9001, ISO 14001, IPC/WHMA-A-620 Class 3.
Core Competencies:
- Customized Wire Harness Design: Supports design from schematics to wiring layout, providing DFM (Design for Manufacturing) analysis.
- Complex processes: Multi-branch wiring, overmolding, potting, waterproofing (IP67/68).
- Material coverage: High-temperature materials (PTFE, ETFE, Kapton), high-flexibility cables (suitable for drag chains/robots).
- Testing System: 100% electrical testing (continuity, withstand voltage, IR), contact resistance testing, pull-off force testing, environmental testing (high/low temperature cycling, salt spray, vibration).
Typical Application Areas:
Industrial robot drag chain wiring harnesses, medical CT/MRI imaging system wiring harnesses, rail transit control cabinets, new energy storage and power systems.
Advantages and limitations:
- Advantages: Rapid prototyping for small batches (engineering samples within one week), extensive experience in serving international clients, strong engineering support capabilities.
- Limitations: Still in the expansion phase compared to multinational giants in terms of global large-scale mass production capabilities.
2. Desay Battery Wiring Harness Division (Desay SV Group)
Company Overview:
Headquartered in Huizhou, Guangdong Province, and part of the Desay Group, the company operates multiple production facilities in Shenzhen, Chongqing, Huizhou, and other locations. It has established long-term partnerships with domestic and international new energy vehicle manufacturers, specializing in battery system and vehicle wiring solutions.
Key Certifications:
IATF 16949, ISO 9001, ISO 14001, UL.
Core Capabilities:
- High-voltage battery harnesses (600V/1000V level) with high-reliability insulation and protection.
- Automated production lines: fully automatic crimping machines, terminal visual inspection, and automatic testing.
- Protective design: overmolding process, waterproof connectors, and resistance to high temperatures and vibrations.
- Collaborative Development: Synchronized optimization of wiring harness layout with battery pack structural design.
Typical Application Areas:
New energy vehicle battery systems, charging stations, and power distribution units.
Advantages and Limitations:
- Advantages: Extensive experience in high-voltage wiring harnesses for new energy vehicles, with a stable supply chain.
- Limitations: Application scenarios are concentrated in battery systems, with insufficient coverage in medical and industrial control fields.
3. Foryou Group Harness Division
Company Overview:
Headquartered in Huizhou, Guangdong Province, and a subsidiary of Foryou Group, with factories located in Guangdong, Chongqing, Anhui, and other regions. The company has been providing electrical architecture solutions to domestic and international automotive manufacturers for an extended period.
Key Certifications:
IATF 16949, ISO 9001, UL, ISO 14001.
Core Competencies:
- Whole-vehicle wiring harness architecture development
- High-speed signal harnesses (CAN, LIN, Ethernet)
- Automated testing systems (100% continuity/voltage withstand)
- Whole-vehicle E/E architecture integration capability
- Typical application areas:
Whole-vehicle main wiring harnesses, in-vehicle communication and entertainment systems, powertrain wiring.
Advantages and limitations:
- Advantages: Extensive experience in integrating electrical systems for automotive OEMs.
- Limitations: Primarily focused on the automotive industry, with limited investment in other industrial markets.
4. Aerospace Electrical Harness Division
Company Overview:
A subsidiary of China Aerospace Science and Technology Corporation, headquartered in Changsha, Hunan Province, with factories mainly located in aerospace and military bases.
Key Certifications:
AS9100 (Aerospace Quality Management System), ISO 13485 (Medical), MIL-DTL Series Military Standards.
Core Capabilities:
- High-reliability aerospace-grade harnesses
- High-temperature materials (polyimide, PTFE)
- High protection (radiation-resistant, flame-retardant, vibration-resistant)
- Military-standard production and testing processes
Typical Application Areas:
Satellites, rockets, military communication systems, avionics.
Advantages and Limitations:
- Advantages: Aerospace and military-grade qualifications and experience.
- Limitations: High production costs and long lead times, unsuitable for general industrial requirements.
5. Great Wall Motors Harness Division
Company Overview:
Headquartered in Baoding, Hebei Province, with production facilities in multiple locations across China, primarily serving Great Wall Motors and export markets.
Key Certifications:
IATF 16949, ISO 14001, UL.
Core Competencies:
- Vehicle wiring and system integration
- High-voltage new energy vehicle harnesses
- Large-scale automated production
Typical Application Areas:
Vehicle main harnesses, new energy electric drive systems.
Advantages and Limitations:
- Advantages: Strong large-scale production capabilities and significant cost advantages.
- Limitations: Primarily focused on internal demand, with limited expansion into external markets.
6. CATL Harness Division
Company Overview:
Headquartered in Ningde, Fujian Province, the company specializes in providing harness solutions for power batteries and energy storage products. Its client base includes global new energy vehicle and energy storage companies.
Key Certifications:
IATF 16949, ISO 9001, UL.
Core Competencies:
- High-voltage battery pack harnesses
- Energy storage system HV/DC harnesses
- High-power connector system integration
Typical Application Areas:
New energy vehicle battery systems, large-scale energy storage power plants.
Advantages and Limitations:
- Advantages: High level of expertise in the battery and energy storage sectors.
- Limitations: Applications are limited to battery-related products, with limited industry coverage.
7. Shanghai Electric Harness Division
Company Overview:
Headquartered in Shanghai, with factories located in East China and South China, the company primarily serves industrial equipment and rail transit sectors.
Main Certifications:
ISO 9001, ISO 14001, EN 45545 (railway flame retardant).
Core Competencies:
- Control cabinet harnesses
- High-current cable assemblies
- Industrial automation wiring
Typical Application Areas:
Rail transit control cabinets, energy equipment, industrial automation systems.
Advantages and Limitations:
- Advantages: Extensive experience in industrial and rail transit sectors, flame-retardant/fireproof standards compliant with international requirements.
- Limitations: Limited coverage of international clients, moderate flexibility in delivery schedules.
8. CRRC Zhuzhou Institute Harness Division
Company Overview:
Headquartered in Zhuzhou, Hunan Province, and affiliated with CRRC Group, the company specializes in rail transit harnesses and electrical systems.
Main Certifications:
ISO 9001, EN 45545, IRIS (Railway Industry Standard).
Core Competencies:
- High-reliability railway transportation harnesses
- Application of flame-retardant, low-smoke, halogen-free materials
- Customized wiring for control cabinets
Typical Application Areas:
High-speed rail, metro, railway transportation signaling and control systems.
Advantages and Limitations:
- Advantages: Significant advantages in specialized railway transportation harnesses.
- Limitations: Limited to the railway industry, with limited cross-industry applications.
9. BYD Electronics Harness Division
Company Overview:
Headquartered in Shenzhen, with factories in Guangdong and Shaanxi, the company primarily supports BYD’s vehicle and battery businesses while expanding into third-party clients.
Key Certifications:
IATF 16949, ISO 9001, UL.
Core Competencies:
- Vehicle harnesses and battery pack harnesses
- Automated crimping and terminal testing
- Industrial electronic harnesses
Typical Application Areas:
New energy vehicles, battery packs, energy storage equipment, and certain industrial electronics.
Advantages and Limitations:
- Advantages: Absolute scale advantage in new energy vehicle harnesses.
- Limitations: Low coverage of external customers and limited expansion of third-party business.
10. Luxshare Precision Harness Division
Company Overview:
Headquartered in Dongguan, Guangdong Province, with factories in Jiangsu, Vietnam, and other locations. Clients include global leading companies such as Apple and Tesla.
Key Certifications:
IATF 16949, ISO 13485, AS9100, UL.
Core Competencies:
- High-speed signal harnesses (USB-C, HDMI, in-vehicle Ethernet)
- Precision medical harnesses (low noise, high signal integrity)
- Aerospace and industrial control harnesses
Typical Application Areas:
Consumer electronics, automotive electronics, medical devices, aerospace.
Advantages and Limitations:
- Advantages: Global leader in precision connectivity and high-speed transmission, with a broad international customer base.
- Limitations: Limited experience in large-scale complex industrial harnesses (e.g., heavy industry/rail transportation).
Why import wire harnesses from China?
Importing wire harnesses from China not only offers price advantages but also provides flexible delivery, international certification guarantees, and cross-industry experience, making it one of the top choices for global procurement.
- Cost Advantage: China boasts a complete upstream supply chain for raw materials and components, with labor costs and large-scale production enabling more competitive pricing.
- Streamlined Supply Chain: From copper materials, insulation, connectors to finished product manufacturing, the entire process is integrated and completed locally, reducing delivery lead times.
- Production Capacity and Flexibility: Capable of supporting both large-scale production and small-batch orders, as well as rapid prototyping and rolling deliveries across multiple batches.
- International Certifications: Most manufacturers have obtained international certifications such as UL, IATF16949, ISO13485, AS9100, and EN45545, meeting the requirements of European and American markets.
- Cross-Industry Experience: Covering automotive, new energy, rail transportation, medical, industrial robotics, and other fields, we can provide customized solutions.
- Compliance and Sustainability: Compliant with environmental regulations such as RoHS, REACH, and low smoke halogen-free, we are increasingly focusing on ESG and green manufacturing.
FAQs
Q1: What are the commonly used conductor materials for wire harnesses?
A1: The most common is copper conductor (bare copper or tin-plated copper) due to its superior electrical conductivity and mechanical reliability. In some applications (such as new energy power systems), aluminum conductors are used to reduce weight and cost, but they require higher standards for terminal connection processes.
Q2: Can different types of wires be mixed in a single harness?
A2: Yes, and this is quite common in modern industrial harnesses. For example, thick-gauge power wires, shielded signal wires, and twisted-pair communication wires are often integrated into the same harness. However, proper EMI shielding, protective design, and consistent termination must be ensured to guarantee system reliability.
Q3: What advantages do Chinese wire harness manufacturers have over their European and American counterparts?
A3: Chinese manufacturers have cost advantages, complete supply chains, and flexible production capacities, enabling them to undertake both large-scale mass production and small-batch rapid prototyping. At the same time, more and more Chinese manufacturers have obtained international certification and are able to meet the compliance requirements of European and American markets.
Conclusion
Wire harnesses are indispensable core components in modern manufacturing, widely used in industries such as automotive, new energy, industrial automation, rail transportation, medical, and aerospace. Selecting the right wire harness manufacturer not only impacts product electrical performance and reliability but also affects project cost control, delivery schedules, and the convenience of long-term maintenance.
By reviewing the top 10 wire harness manufacturers in China 2026, it is evident that different manufacturers prioritize various aspects such as large-scale production, industry certifications, manufacturing capabilities, and customized services. Selecting the appropriate wire harness manufacturer is a critical step in ensuring system stability and mitigating supply chain risks.
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