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http://blog.alighting.cn/zhongmei0901/archive/2010/9/27/100146.html2010/9/27 14:29:00
系人:刘先生15154721836 座机:0537-2397718 旺旺号:zhongmei2
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整顶板岩层中,对处理不稳定围岩效果最佳。 本公司主用矿营钢材: u型钢 u25, u29, u36型钢材,π型钢 7#π型钢 9#π型钢 7号π型钢 9号π型钢 ,槽帮钢 槽板
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