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No.937Beijing Popularity RankingNo.46 Changping DistrictNo.4 Chemicals MaterialsNo.4 Petrochemicals EngineeringNo.4 Construction ManagementNo.4 Ya Li Pipes RoadNo.5 Coal Chemicals TechnologyNo.5 Coal ChemicalsNo.7 Chemicals EngineeringNo.7 Energy DevelopmentNo.9 ChemicalsNo.11 Yi Yao Jing JiNo.11 Natural GasNo.12 Construction Design Consulting市级高新技术企业高新技术企业专利示范企业中关村高新技术企业省级高新技术企业市级创新型中小企业ISO9001认证ISO14001认证