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Nengshi Analytical Sensor Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Qingdao Tlead International Co., Ltd.
Changzhou Andwin International Corporation Limited
WANT Balance Instrument Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Wincom Company Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shenzhen Security Electronic Equipment Co., Ltd.
Labmen Instrument Limited
Shanghai Boqu Instrument Co., Ltd.