Laminating machines for industrial use; Electric glue guns; Electric powered soldering irons; Electric soldering apparatus; Electric welding machines; Electric soldering irons; Electric wet grinders for welding electrodes; Gas-operated welding machines; Welding electrodes; Electric vacuum food sealers for household purposes; Electrical drills; electrical desoldering apparatus and structural parts therefor, namely, heaters, nozzles, filters, and desoldering irons