Patents/Inventors

Guanfei Shi

YizhengCN1 patent

2 Patents

US123453362025
Piston Ring with Hard Plating, and Preparation Method Therefor
Asimco Shuanghuan Piston Ring (Yizheng) Co., Ltd.
0 cites
US122035532025
Wear-resistant and Low-friction Coated Piston Ring and Preparation Method Therefor
Asimco Shuanghuan Piston Ring (Yizheng) Co., Ltd.
0 cites