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Shijiazhuang Zeyuan Optics Co., Ltd.
Foshan Sident Technology Limited
Guangzhou Yihua Electronic Equipment Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Shenzhen Xavier Precision Component Co., Ltd.
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Ergas Technology Co., Ltd.
GIAI PHOTONICS CO., LTD.
Shenzhen Haiwang Sensor Co., Ltd.
Wuhan Joho Technology Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Xiamen High Tech Grinding Co.,Ltd