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Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Henan Forever Medical Co., Ltd.
Xinxiang Hengyu Machinery Equipment Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Wincom Company Ltd.
Shenzhen Keyto Fluid Control Co., Ltd.
WANT Balance Instrument Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Qingdao Tlead International Co., Ltd.
Deson Electric Group Company Limited