新春伊始,来自膨胀剂生产企业的消息显示2004年我国混凝土膨胀剂生产与销售继续保持良好的发展势头,总量与去年基本持平,约为100万吨。从区域分布来看,华北地区销售量有所下降,华东和西北地区则增加,其余地区大致相同,产销量上万吨的企业也比去年有所增加,这表明混凝土膨胀剂行 At the beginning of the new year, the news from expander manufacturers showed that the production and sales of concrete expanders in China continued to maintain a good momentum of development in 2004, with a total volume of about 1 million tons basically unchanged from last year. From the regional distribution point of view, North China sales declined, East and Northwest China increased, the rest of the roughly the same, production and sales of 10,000 tons of enterprises also increased over last year, indicating that the expansion of the concrete line