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Qidong Perfect Precise Tools Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Raylabel Instrument Co., Ltd.
Shenzhen Siyuan Digital Technology Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Shenzhen Lite Technology Limited
OPTECK MANUFACTURING GROUP LTD.
Guangzhou Haike Outdoor Sport Co., Ltd.
Ergas Technology Co., Ltd.
Wincom Company Ltd.
Jiaxing Yaou Optical Technology Co., Ltd.
GIAI PHOTONICS CO., LTD.