The harm of lead to the human bodies is classified as environmental type, occupational type, living type, medical type and mother source type.
2
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.