... 0.80mm-4.0mm copper wire cold pressure welder / alumimum wire, brass wire, flat wire welding machine1.welding copper wire, aluminum wire with no power2. welding only ... or no electricity.2. It is possible to weld two wires with different material.3.Provide desk/trolly to make ... iron3.Advantages:No power, no change of the resistance, clean, light, easy to operate, weld within one minute, aloft working is ...