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40cr精密無縫管現(xiàn)貨規(guī)格尺寸

面臨完成“十一五”節(jié)能40cr精密無縫管減排目標(biāo)的壓力，近2個月，一場強制性的“減排”颶風(fēng)40cr精密無縫管正在各地奔涌，部分省份紛紛采用限電限產(chǎn)甚至關(guān)停對策。

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