Also known as shatterproof glass. It is made by heating ordinary plate glass to a red-hot softening state and then pressing preheated wire or wire mesh into the middle of the glass. Its characteristic is fireproof sex is superior, can keep out flame, do not explode when high temperature burns crack, won't cause fragment to injure a person when broken. There are also anti-theft features, glass cut and wire barriers. Mainly used for roof skylight, balcony window.