No.89 Yuzhong District Popularity Ranking Chongqing No.4 Huan Jing Ying Xiang Ping Jia No.4 Environment Detection No.5 Renewable Resources No.6 Environmental Monitoring No.6 Zi Yuan Zong He Li Yong No.8 Water Supply and Drainage No.8 Zi Yuan Hua Li Yong No.9 Fireproof No.10 Zi Yuan Zai Sheng No.15 Testing Technology No.19 Testing No.20 Environmental Engineering 科技型中小企业 省级创新型中小企业 市级创新型中小企业 省级高新技术企业 市级高新技术企业 省科技型中小企业 高新技术企业 市科技型中小企业