No.223 Shangcheng District Popularity Ranking Hangzhou Zhejiang No.4 Municipal Engineering Design No.6 Quality Control No.7 Shui Zhi Management No.7 Cheng Shi Ji Chu Facilities No.9 Power Transmission and Distribution No.14 Kan Testing Design No.14 Qing Jie No.17 Survey Surveying and Mapping No.18 Quality Certification No.19 Water Conservancy Engineering No.19 Water Conservancy Hydropower Engineering No.20 Sewage Treatment 高新技术企业 省级高新技术企业 ISO9001认证