We all know that lead door is not only a kind of can resist impact collision wave or the heavy door, but also stop the harm of radiation on the human body.
我们都知道铅门不仅是一种能抵抗各种冲击波或重物冲撞的门，而且还能阻挡射线对人体的危害。
We all know that lead door is not only a kind of can resist impact collision wave or the heavy door, but also stop the harm of radiation on the human body.
我们都知道铅门不仅是一种能抵抗各种冲击波或重物冲撞的门，而且还能阻挡射线对人体的危害。
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