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Weifang Greatland Machinery Co., Ltd.
Shanghai Cixi Instrument Co., Ltd.
Wenzhou Luosimeng Machinery Co., Ltd.
Zhejiang Tugong Instrument Co.,Ltd
Hebei Xukang Meter Manufacturing Co., Ltd.
Rigchina Group Company
Beijing Bctrading Science and Technology Co., Ltd.
Zhangjiagang Chuangpu Machinery Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Labmen Instrument Limited