Patents/Inventors

Qiumin Yang

ChongyiCN1 patent

2 Patents

US124854772025
Coarse Grain Cemented Carbide and Preparation Method Thereof
Chongyi Zhangyuan Tungsten Co., Ltd
0 cites
US119996262024
Leaching Method of Scheelite
CHONGYI ZHANGYUAN TUNGSTEN CO., Ltd.
0 cites