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Beijing Chaoyang DistrictNo.17 Lian JiaoNo.26 Coal MiningNo.31 Chemistry CompositingNo.35 Chemicals MaterialsNo.39 CoalNo.44 Zi Ran Zi YuanNo.53 Coal Chemicals Mines Wells Design Mei Tan Zi Yuan Xi Ting Mei Kuang Kai Cai Niao Su全国优秀施工企业省级文明单位文明单位标兵文明单位