据初步统计,目前全国已有百余家工厂130多条石棉水泥制品生产线,其中小波瓦生产线65条;中波瓦生产线37条;大波瓦生产线一条;加筋瓦生产线一条;半波板(瓦)生产线一条;平板生产线4条,年产量约为24000万平方米。目前,国内石棉水泥制品企业均 According to preliminary statistics, there are currently more than 130 asbestos cement products production lines in more than 100 factories across the country, including 65 wavelet tile production lines, 37 production lines of Zhongbowa, one production line of Dawowa, one production line of reinforced tile, and half wave plate (tiles). One production line; four flat production lines, with an annual output of approximately 240 million square meters. At present, domestic asbestos and cement products enterprises are