Business ExpandingTianjin Ruihe Environmental Protection Technology Co., Ltd. has established a Japanese subsidiary in Minato City, Tokyo, to provide solutions for air-intake systems, exhaust systems, and related core components for commercial vehicles and engines

Nov 06, 2025

Tianjin Ruihe Environmental Protection Technology Co., Ltd. a subsidiary of Hebei Yili GroupExternal site: a new window will open., is a Chinese company engaged in the manufacturing and sales of automotive exhaust gas treatment catalysts, stationary source emission control systems, air filters for commercial vehicles, fuel tanks, and urea tanks.

Establishment
2024/07
Destination
Tokyo

  • Mobility & Transportation
  • China

Tianjin Ruihe Environmental Protection Technology Co., Ltd. was established in Tianjin, China in 2019. The company provides solutions for intake systems, exhaust systems, and related core components for commercial vehicles and engines. It offers a full range of exhaust gas treatment catalysts, with notable strengths in low PGM DOC and marine emission control technologies, including the world's first mass production of integrated DOCF catalysts and multiple certification achievements.

To strengthen its research and development and sales activities in Japan, the company established “Unitech Catalyst” in Yokohama, Kanagawa in July 2024. In October of the same year, it relocated to Minato City, Tokyo, where it focuses on technical collaboration with Japanese companies, aftermarket development, and the advancement of new energy technologies.

Going forward, the company aims to actively expand its business in Japan’s engine and generator markets by leveraging its advanced automated production technologies that ensure high quality and low defect rates.

In expanding its operations in Japan, JETRO’s Invest Japan Business Support Center (IBSC) arranged meetings with local governments, provided IBSC facilities and market information, introduced legal and professional experts, and assisted with corporate bank account setup.

V-SCR catalyst

Fe-SCR catalyst

Diesel Oxide Catalyst

Cu-SCR catalyst

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