Using the way of spark to weld the mesh.Using two cylinders,controlling by microcomputer , pressing, forging, welding at the same time, reduce the cost of 3 times without electrode.Welding slit is smooth and  beautiful, the strain of the wire is high. The welding speed can be adjusted, the mire diam of 3mm - 10mm  wires can be welded. It has replaced the old one which produced the grid wire mesh.