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.
Custom Engineering & Rapid Prototyping
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.
Advanced Manufacturing & Precision Assembly
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.
Multi-Stage Testing & Quality Assurance
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.
Global Logistics & Lifecycle Support
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
Medical & Automotive Electronics
Industrial & Smart Technology
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.
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.
2. What quality standards does LEX follow for automotive and medical OEM projects?
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.
3. Can you manage high-mix, low-volume (HMLV) orders alongside mass production?
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.
4. What advanced manufacturing technologies do you utilize for OEM cable assemblies?
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.
5. How does the LEX Texas office facilitate service for North American OEM clients?
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.
6. Are your materials compliant with international environmental and safety standards?
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.