... hot smelting, for instances, embedded welding of copper core of computer radiator with aluminum sheet and speaker web, ... for hardware molds, such as small-size mold, mold accessory and inner hole of mold. C. Welding (braze welding, silver soldering ... and kitchen products, refrigerating copper fitting, lamp decoration fitting, precision mold fitting, hardware handle, eggbeater, alloy steel and steel, ...