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OPTECK MANUFACTURING GROUP LTD.
Shenzhen Slinya Electronic Co., Ltd.
Guangzhou Yihua Electronic Equipment Co., Ltd.
Shenzhen Haiwang Sensor Co., Ltd.
Qinhuangdao Intrinsic Crystal Technology Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Shanghai Aucy Scientific Instrument Co., Ltd.
Guangzhou Haike Outdoor Sport Co., Ltd.
GIAI PHOTONICS CO., LTD.
Shenzhen Bonad Instrument Co., Ltd.
VY Optoelectronics Co., Ltd.
Shenzhen Handsome Technology Co., Ltd.
Labmen Instrument Limited
Shijiazhuang Zeyuan Optics Co., Ltd.
Foshan Sident Technology Limited
Raylabel Instrument Co., Ltd.
Wincom Company Ltd.