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Shanghai Cixi Instrument Co., Ltd.
Beijing Bctrading Science and Technology Co., Ltd.
Hebei Xukang Meter Manufacturing Co., Ltd.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.
Zhangjiagang Chuangpu Machinery Co., Ltd.
Weifang Greatland Machinery Co., Ltd.
Labmen Instrument Limited
Movel Scientific Instrument Co., Ltd.
Rigchina Group Company