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Beijing Topmachines S&T Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Shanghai Galaxy International Trade Co., Ltd.
Beijing Noble Laser Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Nanjing Longjun Survey Instrument Co., Ltd.
Chotest Technology Inc
Foshan Keju Medical Apparatus Co., Ltd.
Jinan Youlyy Industrial Co., Ltd.
Hangzhou Mu Yu Er Tools Co., Ltd.
Labmen Instrument Limited
Shenzhen Sunyuan Technology Co., Ltd.
Guangzhou Lixiang Trade Development Co., Ltd.
Qingdao Carong Import & Export Co., Ltd.
Shenzhen GSD Tech Co., Ltd.