国家经贸委在原来确定的１６０个大中城市的基础上，７月初又将１０个省会城市列入２００３年６月３０日前禁止使用实心粘土砖的城市名单。实心粘土砖就是常见的红砖，目前我国８０％的墙体材料仍在使用这种传统的建筑材料，其生产方式是就地取土、手工或半机械化操作，破坏耕 On the basis of 160 large and medium-sized cities originally identified by the State Economic and Trade Commission, 10 provincial capital cities were again included in the list of cities that banned the use of solid clay bricks by June 30, 2003. Solid clay brick is a common red brick, 80% of our wall materials are still using this traditional building materials, its production is on-site access to soil, manual or semi-mechanized operation, destruction of tillage