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Nanjing Kejie Analytical Instrument Co., Ltd.
Biobase Biodustry (Shandong) Co., Ltd.
Qidong Perfect Precise Tools Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
Foshan Sident Technology Limited
GIAI PHOTONICS CO., LTD.
OPTECK MANUFACTURING GROUP LTD.
Movel Scientific Instrument Co., Ltd.
Shenzhen Chuangxin Instruments CO., LTD.
Qinhuangdao Intrinsic Crystal Technology Co., Ltd.
Ningbo Hongbo Optical Instrument Co., Ltd.
Yiwu Wisdom Import & Export Co., Ltd.
Wincom Company Ltd.
CPG OPTICS LIMITED