Beijing Chaoyang District No.8 Sleeves Pipes No.8 Zong He Cloths Lines No.11 Boilers Technology No.12 Renewable Resources No.12 Pipelines Engineering No.14 Boilers Equipment No.16 Water Supply and Drainage Design No.16 Water Supply and Drainage Engineering No.18 Water Supply and Drainage No.19 Concrete No.20 Zi Yuan Zai Sheng No.22 Decoration Engineering AAA级信用企业 鲁班奖 詹天佑奖 全国五一劳动奖 全国建筑业先进企业 国家高新技术企业 ISO9001认证 ISO14001认证 OHSAS18001认证