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Nanjing Co-Energy Optical Crystal Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
GIAI PHOTONICS CO., LTD.
Qidong Perfect Precise Tools Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
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Ningbo Hongbo Optical Instrument Co., Ltd.
Nanjing Poweam Medical Co., Ltd.
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Shenzhen Xavier Precision Component Co., Ltd.
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Shenzhen Ereagle Technology Co., Ltd.