... each other together to achieve the purpose of welding.Welding advantages:1, welding material does not melt, non-fragile metal ... be welded.4, the welding time is short, without any flux, gas, solder.5, no welding sparks, environmental protection and ... manufacturing and sales of plastic welding machines, ultrosonic welding machines and non-standard machine for more than 10 years.Provided with ...