... :1.very flat on the surface 2.The thickness tolerance is +-0~3mm.3.The color can be made according to ... and USDA approved for direct food contact.UHMW-PE is being used for hundreds of applications in mining, construction, chemical plants, ... for impact toughness, corrosion resistance, and biological inertness. UHMW-PE is used as scrapers, bushings, gears, conveyor rollers and more.