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Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Labmen Instrument Limited
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
WANT Balance Instrument Co., Ltd.
HV Hipot Electric Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.