We mainly use a high-density polyethylene(hdpe) 5502 material which is imported form korean, and blow molding production process for this bus seat.Our product is a reasonable structure, and a good style, appearance, shape and smooth surface, high strength, impact resistance, weather resistance, chemical stability, acid, anti-static, wear resistant , anti-uv, & color stability. Size:88.9*82.55*63.5mm. Color:yellow, red, black, whites.