【CAR REPAIR】Preheat fasteners and separate rusted parts. Remove rust from metal and car body. Strip paint coating from metal surface. Heat surfaces for vinyl coating. Straighten dents without painting. Remove fixtures like spoilers and stickers. Remove sealants from laminated glass. Burn silent blocks on machinery. Heat treat metal parts for hardening and tempering (excluding Copper and Aluminum). One-year quality assurance. Overheat protection with automatic heating stop after 2-3 minutes.