Nanyang Zhongnan Diamond Co.,Ltd.

Zhengzhou Zhongnan JETE Superabrasives Co.,Ltd.

SINO Crysal Superhard Materials Holdings Limited

Henan FUNIK Ultrahard Material Co.,Ltd. of China

Henan Huanghe Whirlwind Co.,Ltd.

Henan Jinqu Gold Company Limited

Zhuhai Jujing Diamond Enterprise Co.,Ltd.

Iljin Diamond Co.,Ltd.

Monte-Bianco Diamond Applications Co.,Ltd 

Henan Sifang Superhard Materials Co.,Ltd.

Beijing Sanhejiaming Laser Technology Development Co.,Ltd.

Wenling Donghai Powder Equipment Plant

Zhengzhou Research Institute of Mechanical Engineering

Shenzhen Ruichengjie S $ T Co.,ltd.

Liuzhou Weilin Superhard Materials Equipment Plant

Zhengzhou Research Institute for Abrasives & Grinding

Henan Union Abrasives Corp

Xinyuan Superhard Materials Products Co.,Ltd.

Henan Jinbei Special Type Diamond Co.,Ltd.

Henan Yalong Diamond Tools Co.,Ltd.

Henan Boreas Technologial Development Co.,Ltd.

Henan Cut-Stone Science & Technology Co.,Ltd.

Shanghai Road New Materials S & T Co.,Ltd. 

Henan Famous Diamond Industrial Co.,Ltd.

Beijing Supower Science and Technology Developing Co.,Ltd.

Zhengzhou Donghui Diamond Industrial Co.,Ltd.

Xian Qinling Diamond Grinding Wheel Co.,Ltd.

Guangdong Yuepeng Fine Chemical Co.,Ltd.

Hubei Changli Diamond Products Co.,Ltd.

Metal Powder Company of Henan Huanghe Whirlwind Co.,Ltd.

Fine Abrasives Shanghai Co.,Ltd.

Kingray New Materials Science & Technology Co.,Ltd.