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Weifang Greatland Machinery Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.
Labmen Instrument Limited
Shanghai Cixi Instrument Co., Ltd.
Wenzhou Luosimeng Machinery Co., Ltd.
Hebei Xukang Meter Manufacturing Co., Ltd.
Tianjin Huaxushengtai Technology Co.,Ltd
Jining Rising-sun Business Machine Co.,Ltd
Zhangjiagang Chuangpu Machinery Co., Ltd.
Rigchina Group Company
Beijing Bctrading Science and Technology Co., Ltd.