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Qingdao Tlead International Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
WANT Balance Instrument Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Labmen Instrument Limited
Wincom Company Ltd.