Welcome To Romtronic

Custom cable assemblies, harness manufacturer

Intelligent maker in professional area for customized cable assembly and wire harness.

Our Company

Professional manufacturer of cable assemblies and wire harnesses

Our company's internal production workshop

Romtronic is a professional cable assembly and wire harness manufacturer in China, a factory engaged in OEM and ODM production services.

Our customized wiring harnesses and customized cable assemblies have been sold to more than 100 countries, such as the United States, Germany, Japan, the United Kingdom, and other countries, and our good quality and service have won many loyal customers.

If you need customized service, please feel free to contact us. Our team will respond within 12 hours to provide a solution that meets your needs.

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Our Products

Custom cable assembly & wire harness types

As experts in customized assemblies, we provide wire harnesses and cable assemblies for a variety of commercial and industrial industries. Our product types include DisplayPort, LVDS, USB, HDMI, DVI, SATA, IEEE 1394, RCA, RS232, VGA, and other cable assemblies and harnesses for different fields such as automotive, trailers, medical, home appliances, robotics, and industrial machinery.

Our system certifications and qualifications

International Quality System Certification & Qualification

Romtronic has obtained several international quality system certifications and qualifications, such as ISO9001:2015, ISO14001:2015, ISO45001:2018, ISO13485:2016(Medical), IATF16949:2016(Automotive), USB4 TID:9115, UL certification, CE certification, etc.

Our Values

Why choose us?


Customized production capacity

Our factory has 27 years of OEM/ODM production experience, Philips, Siemens, Mettler Toledo, Bosch, Samsung, RAFI, TE, Amphenol and other famous brands are our partners.


Accept small quantity orders

We can accept custom orders for various cables and wire harnesses in small quantities. The minimum order requirement is 100 pieces, or a total amount of more than $300.



Conformity and delivery rate 100%

All products have been tested by 300%, with zero defects, 100% on-time delivery, and signed delay penalty agreement.


Operational Flexibility

We are flexible in our operations, compatible with the business styles of all kinds of customers, and able to meet the needs of different customers in the details of cooperation.


Professional Sales Team

We have 17 salespeople, most of whom have been serving OEM and ODM customers in the global cabling industry for more than 10 years, you will feel comfortable dealing with us.


Service Response

We provide 24/7 online service and can handle your inquiries within 12 hours, including drawings, samples, orders and any other engineering issues.


Professional Engineering Team

Our strong and dedicated engineering team with in-house CAD and Pro-E drafting capabilities has been supporting our customers from wiring concept to drafting, wiring and final mechanical assembly.


Automation Equipment

Our factory is equipped with a large number of automatic production equipment, such as an automatic terminal machine, high-frequency automatic soldering machine (HOT-BAR machine), laser wire stripping machine, U4 automatic production line, and so on.


Independent Laboratory

Our factory has an independent laboratory equipped with a large number of testing equipment, such as a TDR network analyzer, salt spray tester, cable bending tester, tensile tester, LCR tester, plug tester, terminal section analyzer, optical tester, and so on.

What Our Customer Say

I was extremely satisfied with the way this order turned out. The supplier went above and beyond, patiently helping me navigate through numerous product and price options until we found the perfect fit.
Mr. Daniel
Mr. Daniel
From Italy
My customer was pleased with it, and he said to me, "The harness was easy to install and comes with everything you need, plus extra fuses. The connectors are also very well made weatherproof!"
Ms. Geneviève​
Ms. Geneviève
From U.K
The cables were made flawlessly and professionally as a prototype, with excellent communication and photos taken upon request during manufacturing, all at an affordable price.
J. K han
J. K han
From South Korea
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