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Beijing Topsky Century Holding Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Xi'an Tosilon Automation Co., Ltd.
WANT Balance Instrument Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Labmen Instrument Limited
Shanghai Drawell Scientific Instrument Co., Ltd.
Shenzhen Lite Technology Limited
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.