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No.81Shijingshan District Popularity Ranking BeijingNo.4 Flue Gas TreatmentNo.6 Qi Ti Ran MaterialsNo.7 Ye Gold EquipmentNo.8 Zhi Hui Ting VehiclesNo.9 Coal GasesNo.10 Hai Shui Dan ChemicalNo.10 Construction Energy SavingNo.11 Gong Yi DesignNo.11 Solid Waste TreatmentNo.14 Fei Water TreatmentNo.18 Overseas EngineeringNo.20 Re Dian国家科技进步奖国家专利科技进步奖首都文明单位文明单位理事单位常务理事单位国家高新技术企业高新技术企业企业技术中心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高新技术企业国家知识产权优势企业ISO9001认证GB/T28001认证GB/T24001认证