... 3.Good resistande to Acid and corrosion,the surface is suitable to be printed.4.Not ... if similar as Aluminium ,so the surface protection is necessary,if surface scratch happened,it should use the ... polish it.Clean:For keeping the surface clear ,when cleaning the surface ,it should usd the soft ... Good resistande impact property.4.Hard surface and easy to be tensile5.Shine surface ,easy to be clearned.6 ...