The AD-PSA system allows adhesive backed abrasive discs/polishing cloths to be easily removed and no residual left.
The AD-Foil system is for PET base abrasive SiC disc or diamond disc. If the AD-Foil transfer plate is dirty, just washing with water.
The AD-PB system is for plain back SiC disc or diamond disc. There is a re-use stick layer on the AD-PB surface, the PB disc can be stick on the surface, easily take off, if the surface is dirty, just washing with water.