Beijing Chaoyang District No.8 Well Completion No.8 Petroleum Equipment No.10 Oil Field Technology Services No.17 Gold Mines No.22 Coal Mining No.26 Petroleum Engineering No.30 Ocean Petroleum Automation Production Petroleum Plain Oil Production Equipment Machinery 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 高新技术企业 省级创新型中小企业 ISO9001认证 ISO14001认证 OHSAS18001认证