Beijing Chaoyang District No.8 Petroleum Technology No.19 Equipment Sales No.39 Guo Ji Wu Liu / Transportation No.44 Shi You Tian Ran Gases No.48 Oil and Gas No.53 Export Trade No.56 International Industries Services No.70 Natural Gas No.75 Import and Export Trade No.79 Jin Kou Petroleum Plain Oil 中关村高新技术企业 省级高新技术企业 市级高新技术企业 高新技术企业 专精特新企业 市级创新型中小企业 ISO9001认证 ISO45001认证 ISO14001认证