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Ningbo Hongbo Optical Instrument Co., Ltd.
Nanjing Poweam Medical Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Shanghai Drawell Scientific Instrument Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Shandong Sheenrun Optics & Electronics Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Shenzhen Ereagle Technology Co., Ltd.
Guangzhou Yihua Electronic Equipment Co., Ltd.
Xi'an Heb Biotechnology Co., Ltd.
VY Optoelectronics Co., Ltd.
Shenzhen Xavier Precision Component Co., Ltd.
GIAI PHOTONICS CO., LTD.
Shanghai Aucy Scientific Instrument Co., Ltd.