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Beijing Topsky Century Holding Co., Ltd.
Guangzhou Beautysource Bio-Technology Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Shandong China Coal Industrial & Mining Supplies Group Co., Ltd.
Shenzhen Pride Instrument Inc.
Zhejiang Haoyu Industry & Trade Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
Hanzhong Quan Yuan Electronic Co., Ltd.
Shenzhen Lite Technology Limited
Qingdao Qianshao Precision Instrument Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Beijing Topmachines S&T Co., Ltd.
Jinjiang Jiaxing Group Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Wenzhou Luosimeng Machinery Co., Ltd.
3rd Eye Electronics Co., Ltd.
Xuzhou Perfect Industry Technology Co., Limited