
Qidong Sanjiang Construction Machinery Co., Ltd.

Bole Environmental Systems (Suzhou) Co., Ltd.Jiangsu Sheng, China

Yantai Dongxing Air-Conditioner Tube Co., Ltd.Shandong Sheng, China

Hunan Education Construction Group Co. Ltd.Hunan Sheng, China

Hydraulic Power Co.,Ltd.Shanghai Shi, China

Tubosider Italiana SpA

Shenzhen Guangde Education Technology Co., Ltd.Guangdong Sheng, China

Zhangjiagang Zhongtian Precision Molding Co. Ltd.Jiangsu Sheng, China

Sichuan Shuke Instrument Co., Ltd.

Chao Chuan Chen

Shenzhen Hongyuan Construction Engineering Co., Ltd.Guangdong Sheng, China

STAX Ltd.Saitama-ken, Japan