
Shandong Bandaojing Co. Ltd.Shandong Sheng, China

Xian Yonghua Group Co. Ltd.

Hebei China Coal Xuyang Energy Co., Ltd.Hebei Sheng, China

Ming Yang Co. Ltd.

Henan Everbright Pipe Industry Co., Ltd.Henan Sheng, China

Shandong Nuohui Energy Saving Technology Development Co., Ltd.Shandong Sheng, China

Interforming SA

Hainan Guangyuanlong Energy Conservation and Environmental Protection Co., Ltd.

xiangrui enterprise co., ltd.

Zhao Lifeng Co., Ltd.

Suzhou Yongjia Superhard Wear-resistant Material Co., Ltd.Jiangsu Sheng, China

Samsung Electron Devices Co. Ltd.