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Shanghai Drawell Scientific Instrument Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Wincom Company Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Qingdao Tlead International Co., Ltd.
Zhejiang Scientific Instruments & Materials Import & Export Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
WANT Balance Instrument Co., Ltd.