It sounds like Paint Remover:
Here's the low down from Amazon description:
Tal-Strip® II Aircraft Coating Remover is especially designed to remove basecoat/clearcoat systems from today’s automobiles. Removes polyurethanes, enamels, lacquers, primers and most other paints and coatings from aluminum and other metals. Brush or spray on and in minutes the coating will soften. Then flush with water or wipe clean.
I personally used a Paint Stripper Aerosol Can for my tank. Probably not as industrial. It wrinkled the paint and I scrapped it off with a putty knife. I did this twice since there were layers. Instructions say that you don't second coat it. Just spray, scrap/ wipe/ wash. Repeat.
Apparently they have strippers for Powder Coats too!
I didn't use any personal protection gear other than dish washer gloves but it's a good idea as everyone can attest.