tempered glass, protection of glass panes in a special furnace, burnt inscription denoting ready and protected material against

tempered glass protection panes special furnace burnt inscription denoting ready protected material building modern industrial tempering production cut color tint panels industry transparent interior laminated factory detail background insulated focus frameless translucent bulletproof glazed manufacturing sky contemporary architecture toughened design construction texture sharp window sunlight architectural clear green wallpaper skyscraper edge thick tower cristal reflect corner heat absorbing buildings easy breakage