Ordinary glass is easily broken by impact, and the broken glass piece is easily damaged to people around when it is scattered. Therefore, the safety of glass has attracted more and more attention in recent years. Safety glass is made of PVB film. The special process, which is firmly bonded with the glass, is as transparent as ordinary glass, and its strength is much higher than that of ordinary glass. Even if it is subjected to strong impact, the glass is broken and the pieces are not attached to PVB film. Will splash and hurt people. At present, the relevant departments of our country have introduced production lines with international standards in the 1990s from abroad, and have now formed a certain production capacity.