The machine adopts electrical synchronous control technique both welding time and cent-control welding is composed of digital and integrated electric circuit .this operation is accurate ,it has stable function ,firm welded point and without welded tracks .Not only welding speed is fast but also it is easy to learn and operate .The machine is equipped with precise equipment for cutting weft and fixing place .so the length of wefts is identical and re3gualar ,it is unnecessary to slice the side .Drawing mesh adopts the equipment with elastic tension link and fixing mesh it is easy to regulate mesh hole and mesh size is rather accurate .welding aperture could adjust randomly with in range .