Chongqing Yubei DistrictNo.15 Yan Tu Gong Cheng She Ji Shi EngineeringNo.16 Engineering Survey DesignNo.33 Survey Design InstituteNo.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