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Beijing Topsky Century Holding Co., Ltd.
Shanghai Boqu Instrument Co., Ltd.
Labmen Instrument Limited
Changzhou Andwin International Corporation Limited
Shenzhen Security Electronic Equipment Co., Ltd.
TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
WANT Balance Instrument Co., Ltd.
Ningbo Jinghai Machinery Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Q-Ying Plastic & Electronic (Shenzhen) Co., Ltd.
Fuzhou DIT Industry & Trade Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.