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Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Wuxi JinyiBo Instrument Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Qingdao Tlead International Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
WANT Balance Instrument Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.
Jiangsu Tianyuan Experiment Equipment Co., Ltd.