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Weifang Better Heavy Machinery Science and Technology Co., Ltd.
Shenzhen Pride Instrument Inc.
Changzhou Danrui Experimental Instrument Equipment Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
VY Optoelectronics Co., Ltd.
Yueqing Haixin Electronic Science Technology Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Shandong Dongrun Instrument Science and Technology Co., Ltd.
Shanghai RuiBiao Construction Machinery Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Nanjing Kejie Analytical Instrument Co., Ltd.
Zhejiang Aijiren Technology, Inc.
Shenzhen Siyuan Digital Technology Co., Ltd.
Guangzhou Maya Medical Equipment Co., Ltd.
Donghai Yukang Quartz Material Co., Ltd.
Jinan Handa Electron Technology Co., Ltd.
EBIC Tools Co., Ltd.
Movel Scientific Instrument Co., Ltd.