@@Blind is blind brick road safety to provide convenient road infrastructure. Blind brick brick paved by the three, one is lead the way brick strip direction, guide the blind assured before the trip, called traveling Blind brick, brick or blind lead the way direction; one is prompted with brick dots, indicating in front of the blind There are obstacles that turn up, called prompt blind brick, or blind lead the way bearing brick; the last category is the blind lead the way hazard warning tiles, large dots, that as the police do not go beyond, in front of danger. I produced the Blind brick specifications are 300 * 300 * 20 300 * 300 * 25, etc., can be customized to map. Learn more acid brick factory information please call: 18639903882 Miss Jiang qq: 1037912189 Supplier: Jiaozuo City Public surplus corrosion resistant materials Limited