8号彩票上光大gd567

  • 大棚管安装时的保护措施

    发布日期:2017-05-24

    我们知道大棚管作为金属材质的产品,在阳光的照射下的升温速度是非常快的,尤其是在中午的时候,光照非常的充足,由于太阳辐射的作用,大棚管会有比较高的温度。

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