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Wuhan Joho Technology Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Shenzhen Ereagle Technology Co., Ltd.
VY Optoelectronics Co., Ltd.
Yiwu Wisdom Import & Export Co., Ltd.
OPTECK MANUFACTURING GROUP LTD.
GIAI PHOTONICS CO., LTD.
Canfort Laboratory and Education Supplies Co., Ltd.
Ergas Technology Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
Nanjing Kejie Analytical Instrument Co., Ltd.
Foshan Sident Technology Limited
Labmen Instrument Limited
Zhengzhou HG Abrasive Tech.Co.,Ltd