When sourcing Ovi Overlays (often used in medical, industrial, or specialized interface applications), you must prioritize material durability and tactile response. Ensure the overlay uses high-grade Polycarbonate or Polyester (PET), as PET offers superior chemical resistance and a flex life of over 1 million actuations. Check for UV resistance if the product is for outdoor use and verify that the adhesive backing (typically 3M series) is suitable for the substrate surface (metal, plastic, or powder-coated).