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Changzhou Operson Imp. and Exp. Co., Ltd.
Nengshi Analytical Sensor Co., Ltd.
Changzhou Danrui Experimental Instrument Equipment Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Hangzhou Gongheng Weighing Equipment Co., Ltd.
Junhong Electronic & Technology Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Beijing Topmachines S&T Co., Ltd.
Guangzhou BTD Car Tools Co., Ltd.
Citotest Labware Manufacturing Co., Ltd.
Shenzhen Pride Instrument Inc.
Shenzhen Siyuan Digital Technology Co., Ltd.
Huazheng Electric Manufacturing (Baoding) Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Ergas Technology Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.