Aluminum industrial profile is always treated as main parts of special industrial construction including working base, lifter, self-circulation transportation system and other fields. The size is always in standard including 10x10,20x20, 30x30, 40x40, 80x80…The thickness is higher than normal profile and should be with very good straightness. As to the surface treatment, it must be anodized. Sandblasted anodzing is better on surface outlooking but some customers don't need sandblasting since that will influence the effect of sliding by.