In reviewing the definitions of the various Feestol sanding discs, the use for Platin 2 is for "solid surfaces" what surfaces are classified as "solid surfaces" ???
Solid surface materials are the man made materials - Corian, Avonite, Meganite, etc, composed of bauxite, acrylic or polyester resins and pigments. It's used mostly for countertops and tables.
Truck, Platin 2 can be used on a lot of other materials besides solid surface. Metal, polish-able finishes, plastics or even wood. Pretty much anytime you need a super fine finish.