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2011年3月26日-27日,第五届(2011)全国公路养护技术研讨会暨公路养护新工艺现场观摩会在河南新乡国际饭店国际会议中心隆重召开。
26th~27th,March,2011,The fifth (2011) national road maintenance technical seminar and new technology of highway maintenance on-site demonstration is held ceremoniously in Henan Xinxiang international hotel international conference center.