6 METALLIC SOLDERING AND WELDING SUBSTANCES-NAMELY, SILVER SOLDER, HARD SOLDER, SHEET SOLDER, WIRE SOLDER, WELDING WIRE, COILED AND UNCOILED, SOLDER METALS, SOLDER PLATES, SOLDER AND WELDING RODS ON METALLIC BASES, METAL RODS FOR HARD SOLDERING AND SOFT SOLDERING, WELDING RODS