对于国内异型钢的发展,我个人这样看
http://www.yixinggang.net/news/jishu/136.html
http://www.yixinggang.net/news/jishu/137.html
http://www.yixinggang.net/news/jishu/138.html
http://www.yixinggang.net/news/jishu/139.html
http://www.yixinggang.net/news/jishu/140.html
http://www.yixinggang.net/news/jishu/136.html
http://www.yixinggang.net/news/jishu/137.html
http://www.yixinggang.net/news/jishu/138.html
http://www.yixinggang.net/news/jishu/139.html
http://www.yixinggang.net/news/jishu/140.html