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Qidong Perfect Precise Tools Co., Ltd.
Quanzhou Jupin Group Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Wuhan Joho Technology Co., Ltd.
Shenzhen Slinya Electronic Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
GIAI PHOTONICS CO., LTD.
Ningbo Hongbo Optical Instrument Co., Ltd.
Shenzhen Bonad Instrument Co., Ltd.
Labmen Instrument Limited
OPTECK MANUFACTURING GROUP LTD.
VY Optoelectronics Co., Ltd.
Movel Scientific Instrument Co., Ltd.