Multi-Strip is a heavy duty paint stripper which makes removing paint easy. This is industrial strength stripper and must be used by professionals only.
Scour the panel first to allow the paint stripper to get underneath the painted surface.
Apply the paint stripper by dabbing on to the surface not brushing.
Allow to bubble and blister and then remove with a scraper.
Should the painted surface take a little bit longer to remove, try wrapping the surface with plastic sheeting/ bagging. This speeds up the chemical reaction with the paint stripper to force the solvents into the painted surface.