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到2000年,全国新建房屋中,使用各种中心烧结制品和其他新型墙体材料比重要达至40%,其中大中城市达到60%.这是国家建材制定的墙体材料的改革目标.近10年来,为了满足城乡大量建房的需要,全国生产的粘土砖以每年200亿至400亿块的速度增长,到1988年粘土砖的年产量从1979年的800亿块增加4367.42亿块.其中乡
By the year 2000, the use of various center-sintered products and other new wall materials in newly built houses has reached an important 40%, of which large and medium-sized cities have reached 60%. This is the reform goal of the wall materials formulated by the national building materials. Over the past 10 years, in order to meet the needs of a large number of housing projects in both urban and rural areas, the country’s production of clay bricks has grown at an annual rate of 20 to 40 billion pieces. By 1988, the annual output of clay bricks has increased by 436.724 billion pieces from 80 billion pieces in 1979. township