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简介：两会不锈钢复合管护栏过后，华北地区环保压力越发明显，全国28个行政区总产能9.34亿吨，产能分布存在严重的区域不平衡。其中产能最大的为河北省，总产能达2.4亿吨，占全国总产能的25.7%，环渤海的河北、山东、辽宁及港口资源丰富的江苏四省占全
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