1. Shaanxi Zhongtian Eternal Energy Management Co., Ltd.: located at Room 240 1, Block B, New Chang 'an Plaza, No.34 Fenghui South Road, High-tech Zone, xi City, Shaanxi Province, producing denitration agents.
2. Suzhou Qingkong Environmental Protection Technology Co., Ltd.: located in Zhigu Creative Industry Park, No.669 Qingfeng West Road, Kunshan Development Zone, producing denitration agents.