Aluminium shims are often anodized, which makes them non-conductive and improves their appearance (see case modding).
The properties of the name plates that vary from application to application include: Material (including aluminum, stainless steel or titanium), thickness, Custom Graphics, Screen printing, Etching, and Anodizing, Photosensitive Anodized Aluminum, Adhesive backing, UL and CSA approval, Serialization, Military Standards and Embossing.