
Shenzhen Langte Weiye Technology Co., Ltd.Guangdong Sheng, China

Taicang Shengda Machinery Co., Ltd.Jiangsu Sheng, China

Zhuhai Besso Cell Science and Technology Co., Ltd.Guangdong Sheng, China

Beijing Huadian Guangda New Energy Environmental Protection Technology Co., Ltd.Beijing Shi, China

Core Laboratories Canada Ltd.Alberta, Canada

Pizhou Jiukou Trading Co., Ltd.Jiangsu Sheng, China

Huizhou Maifeng Sealing Technology Co., Ltd.Guangdong Sheng, China

Beijing Hengtong Weida Technology Co., Ltd.Beijing Shi, China

Taizhou Xianju Pharmaceutical Co. Ltd.Zhejiang Sheng, China

Shandong Liaocheng Derun Electromechanical Technology Development Co., Ltd.Shandong Sheng, China

PetroChina Coalbed Methane Co., Ltd.

Wuxi Santaizi Metal Products Co., Ltd.Jiangsu Sheng, China