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Xi'an Heb Biotechnology Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
WANT Balance Instrument Co., Ltd.
HV Hipot Electric Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Shenzhen Security Electronic Equipment Co., Ltd.
Wincom Company Ltd.