I work in a shop that does some Powder Coating and we have an Industrial stripper like the one listed from Eastwood . It sounds like the same from the Eastwood description .
The one we have works very good . It only comes in a 55 gal drum for about $600.00
I would try the Eastwood one if I were you , As it says in the Eastwood ad keep the part wet with the stripper (submerged is best )