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Guangzhou Yihua Electronic Equipment Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Nanjing Puao Medical Equipment Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Yiwu Wisdom Import & Export Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Shenzhen Haiwang Sensor Co., Ltd.
Wincom Company Ltd.
GIAI PHOTONICS CO., LTD.
Canfort Laboratory and Education Supplies Co., Ltd.
Shenzhen Xavier Precision Component Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Foshan Sident Technology Limited
VY Optoelectronics Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.