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6月25～30日,第二届全国混凝土企业家及高级管理人员高峰论坛在兰州的甘肃国际大酒店召开。此次会议由建筑材料工业技术情报研究所主办,《商品混凝土》杂志社和中国商
June 25 ~ 30, the second national concrete entrepreneurs and senior management forum held in Lanzhou, Gansu International Hotel. The conference was sponsored by the Institute of Technical Information for Building Materials Industry and the magazine “Commercial Concrete” and Chinese merchants