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OPTECK MANUFACTURING GROUP LTD.
Henan Forever Medical Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
CPG OPTICS LIMITED
GIAI PHOTONICS CO., LTD.
Nanjing Poweam Medical Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Zhejiang Top Cloud-Agri Technology Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
Yiwu Wisdom Import & Export Co., Ltd.
Ergas Technology Co., Ltd.