No.92 Tianjin Popularity Ranking No.7 Jinnan District No.1 Greening Engineering No.1 Yan Tu Gong Cheng She Ji Shi Engineering No.1 Surveying and Mapping No.1 Drainage Systems No.1 Quality Detection No.1 Water Safety No.1 Huan Jing Ying Xiang Ping Jia No.1 Water Construction No.1 Heating Supply No.1 Gong Cheng Ce Liang No.1 Water Supply and Drainage Engineering No.1 Shui Wu Gui Hua 副理事长单位 理事单位 理事长单位 国家高新技术企业 高新技术企业 市级文明单位 ISO9000认证 ISO14000认证