Custom Cable Assembly & Wire Harness Manufacturer
High-Reliability Interconnect Solutions for Mission-Critical Applications.
HMLV Specialist | 300% Inspection | 5-15 Day Samples | In-House Lab

Our Company
Romtronic is a premier China-based wire harness and cable assembly manufacturer dedicated to providing high-performance interconnect solutions for OEM and ODM customers worldwide. Since 1997, we have combined engineering innovation with rigorous quality control to meet the most demanding technical requirements.
Global Standards & Compliance: We are fully certified to ISO 9001:2015, ISO 13485:2016 (Medical), and IATF 16949 (Automotive). Our products are compliant with RoHS, REACH, and UL standards.
Massive Production Capacity: Operating from a 10,000㎡ state-of-the-art facility, we serve industry leaders in more than 80 countries.
The “Zero-Defect” Promise: We implement a 300% inspection policy (Material, In-process, and Final QC) to ensure mission-critical reliability for every shipment.
Email us now:
Our Products
As a versatile cable assembly manufacturer, Romtronic provides high-precision wire harnesses and integrated interconnect solutions engineered for the most demanding commercial and industrial environments.
Our extensive manufacturing capabilities cover a wide array of configurations, including DisplayPort, LVDS, USB 4.0, DVI, SATA, and high-speed eDP links. By utilising specialised connectors such as JST, M8/M12/M16, and RS232/VGA, we ensure that every custom assembly is optimised for signal integrity and long-term durability, regardless of application complexity.
Why Choose Us?
Certified for High-Compliance Industries: IATF 16949 | ISO 13485 | EN 45545 | USB4 TID.
300% Inspection & Zero Defects
Every product undergoes rigorous multi-stage testing, ensuring zero defects and uncompromising quality for high-reliability applications.
Independent, Fully Equipped Laboratory
Our in-house lab validation includes TDR, salt spray, tensile, and bending testing to ensure advanced signal integrity and durability.
Small Quantity Orders Accepted (HMLV)
Specializing in High-Mix Low-Volume production. Flexible MOQs start from just 10 pieces or a total order value of over $100.
29Y OEM/ODM Experience
Partners with global brands like Siemens, Bosch, and Samsung.
Professional Engineering Team
12 experienced engineers proficient in CAD and Pro-E drafting.
Advanced Automation Equipment
Laser wire stripping and fully automated production lines.
Service Response within 24 Hours
24/7 online support and rapid technical expert feedback.
Expert Sales Team
18 sales professionals with 10+ years of global industry experience.
Operational Flexibility
Operations designed to meet diverse customer needs and business models.
What Our Customer Say
Working with Romtronic for our custom automotive wire harnesses has been an outstanding experience. Their team, particularly Emily, delivers exceptionally prompt and professional service. On top of that, the structure and detailing of their products are incredibly precise and well-engineered.
Anna H. Hathaway
We love working with Romtronic. Their medical wire harnesses are always top-notch, and they deliver with incredible speed. In the demanding healthcare industry, finding a company that strikes the perfect balance between quality craftsmanship and efficiency is rare.
Steffen Neumann
Working with Romtronic has been a game-changer for my industrial automation projects. Their team is incredibly responsive, consistently delivering premium, marine-grade products. They provide fast, reliable, and high-quality solutions that keep every one of my projects on track.
Connor Pasley
Romtronic has always been our go-to partner for automotive wire harnesses, and they never cease to impress. Every single product is meticulously crafted with an exceptional eye for detail. As a premier supplier in the automotive industry, they are truly set apart by their professionalism and reliability.
Marie Caron
Contact Us
Feel free to contact us by filling out the form to request a quote for cable assemblies or wire harnesses or to schedule a factory tour. You can also take a live video tour of our company at your convenience.

