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Hebei Xukang Meter Manufacturing Co., Ltd.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.
Weifang Greatland Machinery Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Wenzhou Luosimeng Machinery Co., Ltd.
Labmen Instrument Limited
Zhangjiagang Chuangpu Machinery Co., Ltd.
Rigchina Group Company