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Nanjing Co-Energy Optical Crystal Co., Ltd.
Jinjiang Jiaxing Group Co., Ltd.
Hangzhou Gongheng Weighing Equipment Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Movel Scientific Instrument Co., Ltd.
Junhong Electronic & Technology Co., Ltd.
Hanzhong Quan Yuan Electronic Co., Ltd.
Weifang KM Electronics Co., Ltd.
Guangzhou Beco Electronic Technology Co., Ltd.
Labmen Instrument Limited
Changzhou Danrui Experimental Instrument Equipment Co., Ltd.
Rigchina Group Company
Nengshi Analytical Sensor Co., Ltd.
Qingdao Carong Import & Export Co., Ltd.
Beijing Topmachines S&T Co., Ltd.