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Beijing Topsky Century Holding Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Qingdao Tlead International Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Deson Electric Group Company Limited
Labmen Instrument Limited
Jinan Handa Electron Technology Co., Ltd.