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Nanjing Poweam Medical Co., Ltd.
Wuhan Joho Technology Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Canfort Laboratory and Education Supplies Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
GIAI PHOTONICS CO., LTD.
Guangzhou Haike Outdoor Sport Co., Ltd.
Qinhuangdao Intrinsic Crystal Technology Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Shenzhen Xavier Precision Component Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Ergas Technology Co., Ltd.