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Xiamen Liteng Engineering Machinery Co.,Ltd
Shenzhen Dowdon Tech Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
Shenzhen Slinya Electronic Co., Ltd.
Nanjing Co-Energy Optical Crystal Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
Jinan Hope Wish Photoelectronic Technology Co., Ltd.
Shenzhen Haiwang Sensor Co., Ltd.
GIAI PHOTONICS CO., LTD.
Ergas Technology Co., Ltd.
Canfort Laboratory and Education Supplies Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.