We specialize in chemical etching automotive components for the world’s leading names including BYD Auto, XPENG, NIO, Great Wall Automotive.

As one of the IATF 16949 accredited photo etching suppliers, we have the scale, depth of resource and experience to meet the world-class levels of product quality, productivity, competitiveness and continuous improvement our customers demand.
Photo-etched automotive components
We manufacture the widest range of automotive components, in both development and production quantities measured by the million, including:

  • High-end speaker grilles and interior trim for luxury and premium vehicle marques
  • Bipolar fuel cell plates for next-generation vehicles
  • A wide range of electronics and sundry components including shims, gaskets, washers, electrical connectors and contacts, and EMI shielding solutions

Quality and repeatability
Tongjin Technology operates a continuous quality improvement program, working closely with our customers to satisfy their APQP requirements through FMEA, SPC, MSA and PPAP.
We maintain repeatability levels approaching Six Sigma standards, supported by a best-in-class in-house metrology facility covering:
Material hardness and mechanical properties
Surface roughness measurement
Material analysis and dimensional accuracy measurement
True prototype to production supply
As one of the largest automotive, home kitchen sheet metal component supplier in China, we photo-etch more than 500 tonnes of raw material each year, manufacturing over 20 million precision components for the automotive industry.
Tailored customer solutions
We react quickly to increased customer demand, investing in new and additional manufacturing lines, and working with our technology partners to streamline manufacturing and reduce cost.




Customer Reviews

I am extremely impressed with the precision...
Swapnil from United StatesWednesday, Jan 26, 2019
"I am extremely impressed with the precision and quality of the chemical etching performed by your team. The intricate designs on our metal components were etched flawlessly, exceeding our expectations. Thank you for delivering such a high-quality product."
Your chemical etching service has significantly improved the durability...
Sarah from United KingdomWednesday, Jan 20, 2020
"Your chemical etching service has significantly improved the durability and functionality of our products. The etched patterns not only enhance the aesthetics but also provide excellent grip and tactile feel. Our customers are thrilled with the results, and we couldn't be happier with your exceptional craftsmanship."
We have been relying on your chemical etching expertise for several projects...
Eduardo from ItalyWednesday, Mar 16, 2022
"We have been relying on your chemical etching expertise for several projects, and each time, you have consistently delivered outstanding results. Your attention to detail, quick turnaround time, and excellent customer service make you our preferred choice. Your commitment to excellence is commendable."
has given our brand a unique edge in the market...
Taner from TurkeyFriday, April 26, 2023
"The chemical etching performed by your team has given our brand a unique edge in the market. The intricate logos and designs etched onto our products have attracted significant attention and set us apart from our competitors. We appreciate your professionalism and skill."

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