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尊敬的各位领导、专家、同志们、朋友们： 由国家建材局科教委、全国墙材科技信息网、中国建材机械工业协会、《砖瓦》杂志社、国家建材局墙体屋面材料质量监测中心联合召开的“２０００年全国墙体屋面材料工业生产技术及装备交流交易大会”今天就要闭幕了，３天来，经过大家的
Distinguished leaders, experts, comrades and friends: From the National Science and Education Committee of the China Building Materials Bureau, the National Wall Materials Science and Technology Information Network, the China Building Material Machinery Industry Association, the Brick and Tile Magazine, and the National Building Materials Bureau Wall Material Quality Monitoring Center The “2000 National Conference on Production Technology and Equipment Exchange for Wall Roofing Materials Industry” jointly held today will be closed today. In 3 days, everyone’s