No.7 Rongchang District Popularity Ranking Chongqing No.5 Water Purification Technology No.7 Salt Industries No.8 Water Treatment Engineering No.8 Environment Technology No.8 Shui Chu Li Wei Hu No.9 Gao Fen Zi Chemistry No.9 Water Treatment Technology No.10 Water Engineering No.10 Water Services No.10 Water Safety No.10 Water Construction No.10 Water Treatment 企业技术中心 理事单位 国家高新技术企业 高新技术企业 发明专利 实用新型专利 副理事长单位 理事长单位