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Beijing Topsky Century Holding Co., Ltd.
Zhuhai City Deyuan Import & Export Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Dongguan Haida Equipment Co., Ltd.
Shenzhen Security Electronic Equipment Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Chongqing Gold Mechanical & Electrical Equipment Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Liaoning Huake Petroleum Apparatus Science & Technology Co., Ltd.
Labmen Instrument Limited
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.