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Beijing Topsky Century Holding Co., Ltd.
Labmen Instrument Limited
Jinan Handa Electron Technology Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Qingdao Tlead International Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Shenzhen Security Electronic Equipment Co., Ltd.
Xi'an Tosilon Automation Co., Ltd.
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.
Wincom Company Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.