curved glass is made by heating annealed glass to its softening temperature,then bending to the shape by weight and outside force in special molds,and finally cooling down by nature.curved tempered glass or curved heat strengthened glass is made of annealed glass heated to its softening temperature,then bended to the shape by weight and outside force,and finally cooled down rapidly by clean compressed supply curved tempered laminated glass,curved tempered IGU,curved tempered coated glass and the other high performance curved tempered glass multiple products.