CO2 gas shielded solid core welding wire, flux-cored welding wire, surfacing welding wire, submerged arc welding wire, argon arc welding wire, stainless steel welding wire, aluminum and aluminum alloy welding wire; various types of welding electrodes for carbon steel, low alloy steel, heat-resistant steel, low-temperature steel, stainless steel, surfacing, cast iron, etc.; special soft welding wire for coil nails and over 200 varieties of various special welding materials. Additionally, development, research, and production tasks can be completed according to users' special requirements.