Treatment and coating of metal using high-frequency and radio-frequency waves to join the coated metals with flexible PVC and polyurethane; Coating of metal with PVC and Polyurethane in the nature of applications of using high-frequency and radiofrequency waves

Machines, namely, high-frequency metal welding machines for joining flexible coated polyvinyl chloride and polyurethane fabrics with metal attachments; welding electrodes; electric welding machine; laser welding machines; gas-operated welding machines; welding generators; electric generators; current generators; high frequency electric generators