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Ningbo Hongbo Optical Instrument Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Quanzhou Jupin Group Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Nanjing Kejie Analytical Instrument Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
VY Optoelectronics Co., Ltd.
Shenzhen Ereagle Technology Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Guangzhou Yihua Electronic Equipment Co., Ltd.
Shenzhen Haiwang Sensor Co., Ltd.
GIAI PHOTONICS CO., LTD.