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Ningbo Hongbo Optical Instrument Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Qinhuangdao Intrinsic Crystal Technology Co., Ltd.
Yiwu Wisdom Import & Export Co., Ltd.
Shenzhen Siyuan Digital Technology Co., Ltd.
Shenzhen Haiwang Sensor Co., Ltd.
VY Optoelectronics Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
China Xinxing Shanghai Import & Export Corporation
Nanjing Co-Energy Optical Crystal Co., Ltd.
GIAI PHOTONICS CO., LTD.
Shanghai Aucy Scientific Instrument Co., Ltd.
Labmen Instrument Limited