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Henan Bolong Environmental Protection Equipment Co., Ltd.
Henan Ku Shun Machinery Equipment Co., Ltd.
Hangzhou Jingfei Instrument Technology Co., Ltd
Hangzhou Guidling Technology Co., Ltd
Haining HAD Socks Co., Ltd
Wuxi Hongda Heavy Industry Co., Ltd
Henan Webetter Intelligent Equipment Co.,Ltd
Kunshan DS Precision Machinery Co.,Ltd
Longhua Technology Group (Luoyang) Co.,Ltd.
Shaanxi Zhongtuo Mine Equipment Co.,Ltd
VY Optoelectronics Co., Ltd.
Shijiazhuang Zeyuan Optics Co., Ltd.
GIAI PHOTONICS CO., LTD.
Nanjing Co-Energy Optical Crystal Co., Ltd.
CPG OPTICS LIMITED