Chongqing Yubei District No.15 Yan Tu Gong Cheng She Ji Shi Engineering No.16 Engineering Survey Design No.33 Survey Design Institute No.37 Engineering Survey Engineering Geology Survey Di Zhi Zai Hai Fang Zhi Yan Tu Engineering Survey Gong Cheng Di Zhi Geology Survey Yan Tu Engineering 理事单位 高新技术企业 市级专精特新中小企业 省级高新技术企业 市级高新技术企业 市级创新型中小企业 ISO9001认证