Premier Manufacturer
ISO9001:2015 Certified
IATF16949: Compliant

Precision OEM Wire Harness & Contract Manufacturing

Bridging the gap from complex design to high-volume production with IATF 16949 and ISO 13485 certified excellence.

  • Certified Quality: IATF 16949 (Automotive) & ISO 13485 (Medical)

  • Engineering Support: Professional DFM Prototyping & Rapid Mass Production

  • Global Footprint: 5,000㎡ Modern Facility with Texas-based Sales Office

  • Full Compliance: UL, CSA, RoHS & REACH Compliant Solutions

Get A Custom Wiring Harnesses Today!

Our Clients

Wiring Harnesses Assembly Services

From initial concept to precision manufacturing, LEX provides custom-engineered interconnect solutions tailored to your unique specifications. Operating under rigorous IATF 16949 and ISO 13485 standards, our National High-Tech facility ensures uncompromising quality through every stage of our development process.

Technical Consultation & Application Analysis
  • Deep Application Analysis: Based on experience with industry leaders like CATL, we evaluate flex cycles and signal integrity for robotic environments.

  • Compliance Alignment: Ensuring all designs meet IATF 16949 and UL/CSA global regulatory requirements.

  • DFM Support: We optimize cable routing and connector selection using our 5,000㎡ R&D base.

  • Rapid Prototyping: Delivery of functional samples in 7-10 days, supported by our Texas-based sales team.

  • Microscopic Verification: Using terminal cross-section analyzers and CCD magnification to ensure structural integrity.

  • Full Traceability: A rigorous quality system that tracks every material and process for enterprise-level transparency.

  • Microscopic Verification: Using terminal cross-section analyzers and CCD magnification to ensure structural integrity.

  • Full Traceability: A rigorous quality system that tracks every material and process for enterprise-level transparency.

  • Strategic Supply Chain: Leveraging our Xiamen and Zhangzhou factories to optimize lead times and logistics.

  • Ongoing Partnership: Providing continuous design iterations and technical support to keep your products competitive.

Products

We integrate Molex’s industry-leading connector technology into every custom cable solution.

Multi-Branch Wire Harnesses

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Multi-Branch Wire Harnesses

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Multi-Branch Wire Harnesses

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Multi-Branch Wire Harnesses

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Multi-Branch Wire Harnesses

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Multi-Branch Wire Harnesses

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Connector Options

Selects the right connector based on your performance requirements and environmental conditions.

Mini-Fit Jr.™ Connectors

Supporting a high-current capacity of up to 13A per circuit with a secure TPA locking mechanism. These are the preferred choice for reliable power distribution in vibration-heavy environments, such as automotive systems, industrial machinery, and high-power medical equipment.

KK™ Series Connectors

A cost-effective wire-to-board solution with a standard pitch. Frequently utilized in auxiliary control boards for consumer electronics, household appliances, and diverse industrial control modules.

Micro-Fit 3.0™ Connectors

Featuring a compact 3.0mm pitch to solve space-constraint challenges. Their polarized, foolproof design eliminates the risk of mis-mating in high-density control systems, robotics, and telecommunications infrastructure.

MX150™ Sealed Connectors

Engineered with an IP67 rating to provide a complete seal against moisture ingress and dust contamination. Essential for marine electronics, automotive engine compartments, and outdoor industrial equipment requiring exposure to harsh fluids and weather.

FCT D-sub Connectors

Providing high-durability, interference-resistant connectivity for complex user interfaces, laboratory equipment, and aerospace communication systems.

Nano-Fit™ Connectors

Delivering robust electrical performance in an ultra-compact 2.50mm pitch. These are ideal for Internet of Things (IoT) sensors, wearable technology, and compact electronics where every millimeter of PCB space is critical.

SL™ Modular Connectors

Utilizing advanced shielding and locking technology to maintain superior signal integrity in high-speed data applications. They serve as the backbone for data centers, industrial automation networks, and smart infrastructure.

Industry Applications

Our high-reliability aircraft wire harnesses are engineered to endure the extreme environmental and safety demands of the aviation industry. Leveraging our IATF 16949 and ISO 13485 certified manufacturing processes, we provide flight-critical connectivity across these specialized aerospace sectors:

New Energy & ESS Solutions

We specialize in high-power Energy Storage System (ESS) harnesses and innovative CCS Integrated Trays. Our OEM solutions solve structural rigidity issues and simplify module assembly for leading energy integrators.

Medical & Automotive Electronics

Operating under dual certification, we deliver zero-defect wire harnesses for medical devices and automotive instrumentation. We provide full traceability and risk management for your mission-critical OEM projects.

Industrial & Smart Technology

Providing ruggedized interconnects for industrial routers, smart security, and high-end consumer tech. We offer professional DFM support and prototyping to ensure your complex designs are optimized for mass production.

Why Choose LEX?

Empowering global industry leaders with custom-engineered connectivity solutions, anchored by uncompromising quality and rigorous international standards.

Dual-Standard Quality Excellence

We operate under both IATF 16949 (Automotive) and ISO 13485 (Medical) certifications. This dual-standard approach applies the most rigorous traceability and zero-defect protocols to every OEM project, ensuring premium quality regardless of your industry.

Professional DFM Engineering Support

Our team provides expert Design for Manufacturing (DFM) reviews to optimize your schematics. We bridge the gap between complex prototypes and efficient mass production, helping you reduce material waste and avoid costly design revisions.

Advanced Precision Automation

With a 5,000㎡ modern facility, we utilize integrated automatic crimping, housing assembly, and ultrasonic welding. These high-precision technologies ensure 100% consistency and superior electrical integrity for high-volume orders.

Texas-Based Technical Support

Experience the ease of local communication. Our dedicated sales and engineering office in Texas, USA, provides real-time technical assistance and rapid design iterations during your business hours, eliminating the challenges of time zones.

High-Mix, Flexible Manufacturing

We excel at managing the entire product lifecycle, from low-volume, high-complexity (HMLV) prototypes to large-scale mass production. Our flexible lines allow you to scale rapidly without sacrificing quality or delivery speed.

Global Compliance & Market Entry

Every assembly is engineered to meet UL, CSA, RoHS, and REACH standards. We handle the complex compliance requirements of the global market, ensuring your products are ready for immediate international distribution.

Quality and Safety, Guaranteed

Our IATF 16949 & ISO 13485 certified, National High-Tech facility builds UL/CSA-recognized and RoHS-compliant interconnect solutions for global industry leaders.

What Our Customers Are Saying

From rapid prototyping to large-scale production, we’ve built lasting partnerships based on manufacturing excellence and transparent communication. Here is what our global partners across diverse industries have to say about their experience working with us.

Robert Anderson
Robert Anderson
Lead R&D Scientist | High-Performance Electronics
"The technical precision LEX brings to the table is exceptional. Whether it’s achieving hermetic sealing with advanced UV dispensing or ensuring signal integrity in high-vibration environments, their solutions consistently outperform our expectations. They don't just build harnesses; they engineer connectivity that thrives in the harshest conditions."
Michael Chen
Michael Chen
Director of Engineering | Industrial Automation Solutions
"Their engineering team provided invaluable support when we faced complex integration challenges in our latest system rollout. By optimizing our design for better manufacturability and durability, they significantly improved our product's long-term reliability. Plus, having their responsive sales office in Texas, USA, makes the entire global coordination process seamless."
Sarah Thompson
Sarah Thompson
Quality Assurance Manager | Precision Medical Systems
"Finding a partner that understands the rigors of ISO 13485 and IATF 16949 is rare. LEX's commitment to zero-defect manufacturing and full material traceability has made them an essential part of our supply chain. Every assembly we receive reflects the high-precision standards we demand for our most critical applications."
David Miller
David Miller
Senior Procurement Lead | New Energy & EV Infrastructure
"LEX’s scalability is impressive. With over 5,000 square meters of advanced manufacturing space, they’ve handled our large-volume global contracts with zero delays. Their ability to maintain such high-end quality—utilizing ultrasonic welding and automated testing—while meeting our aggressive production timelines is a major competitive edge for us."

Frequently Asked Questions

1. How does LEX support OEM customers during the initial design and DFM phase?

We provide comprehensive Design for Manufacturing (DFM) support to ensure your wire harness designs are optimized for both performance and cost-effective mass production. Our engineering team reviews your schematics to suggest improvements in material selection, connector compatibility, and routing efficiency. By identifying potential manufacturing hurdles during the prototyping stage, we help OEM customers significantly reduce time-to-market and avoid costly mid-production design changes.

LEX operates under a rigorous quality management framework, holding both IATF 16949 for the automotive industry and ISO 13485 for medical device manufacturing. These certifications guarantee that every OEM project follows strict traceability, risk management, and process control protocols. Whether you are developing a battery management system for an EV or a complex diagnostic medical assembly, our “quality-first” culture ensures zero-defect delivery.

Yes, our flexible manufacturing infrastructure is designed to scale with your project’s lifecycle. With over 5,000 square meters of production space across multiple facilities, we can efficiently handle high-volume runs for established products while maintaining dedicated lines for low-volume, high-complexity (HMLV) OEM orders. This flexibility allows our partners to manage their inventory more effectively and respond quickly to market fluctuations.

Our facilities are equipped with state-of-the-art automation to ensure precision and repeatability. Key technologies include integrated automatic crimping and housing assembly machines, which eliminate manual errors, and ultrasonic welding for superior electrical conductivity in high-power applications. For quality assurance, we utilize CCD electronic magnifiers and terminal cross-section analysis to verify the integrity of every connection at a microscopic level.

To bridge the gap between global manufacturing and local support, we maintain a dedicated sales and engineering support office in Texas, USA. This local presence allows us to offer real-time communication, rapid design iterations, and localized technical assistance during your business hours. For North American OEMs, this means the cost benefits of a global manufacturing base combined with the ease of working with a local partner.

Compliance is non-negotiable at LEX. All materials used in our OEM wire harnesses—from insulation and jacketing to connectors and terminals—comply with UL, CSA, RoHS, and REACH regulations. We maintain a robust supplier auditing process to ensure that every component in your bill of materials (BOM) meets global safety and environmental requirements, facilitating a smooth entry into international markets.