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简介：     统计局和中钢协采集对象不同，以及钢企每年完成全年产量任务偏好将部分产量延后到下一年一季度上报，是造成统计数据不一致的主要因素。但就防撞护栏行业本身而言，目前产能过剩的防撞护栏业不是光靠一些环
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