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简介:中国是世界第一大钢铁生产大国,不锈钢碳素钢复合管产能达到9亿吨,占世界钢铁产能的60%强,但中国又是铁矿石资源贫乏的国家。上游资源长期受制于人,不仅影响着国家经济安全,也严重制约企业利润。三大矿石巨头垄断矿石市场,把控价格,钢铁生产经营效益
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