Wuxi Zhongke Longze Information Technology Co., Ltd.
Weihai Yaochi Arts & Crafts Co., Ltd.
Premium Artificial Lift Systems Ltd.
Shandong Hengye Petroleum New Technology Application Co. Ltd.Shandong Sheng, China
Huangshi Ruizhi Machinery Automation Co., Ltd.
Shanghai Zhongke Modern Laboratory Equipment Co. Ltd.
Fujian (Quanzhou) Harbin Institute of Technology Engineering Technology Research Institute
Vomm Chemipharma SRL
Unifast Srl
Shenzhen Jianheng Measurement and Control Co., Ltd.Guangdong Sheng, China
Tianjin Huatian Century Machinery Co., Ltd.Tianjin Shi, China
Qingdao Aihualong Biotechnology Co., Ltd.