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Lianyungang Hongkang Quartz Products Co., Ltd.
Jiangsu Jingzhongjing Industry Coating Equipment Co., Ltd.
Wuhan Joho Technology Co., Ltd.
Chongqing Fengdu Biotechnology Co., Ltd.
Beijing Topsky Century Holding Co., Ltd.
Guangzhou Dimei Beauty Technology Co., Ltd.
Citotest Labware Manufacturing Co., Ltd.
Tianjin Humanda Technology Development Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
OCOM Technologies Limited
Qingdao Carong Import & Export Co., Ltd.
Guangzhou Konmison Electronic Technology Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.
Shanghai Cixi Instrument Co., Ltd.
Hangzhou Gongheng Weighing Equipment Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.