Raw material: Tooth flat steel: Material is the general material Q235, flat steel and ordinary flat steel is different, flat steel side of the uneven level of teeth. (Mainly in the non-slip. We use the main slitting flat steel, and a steel plate cut from)
Hemp steel: also called twisted square steel, generally 5x5 6x6 8x8 square steel, twisted into the steel.
Anti-skid board features: