... appearance 3.Stabilized working 4.double head 5.long servicelife 1.Patent technology ... high frequency) welding machines act as the leading of products.3.We have many technical engineers who have worked on HF welding machine ... machine is universal usage for PVC,EVA,PEVA,EVOH,PU,PE,PET,dermis and so on.6.Applied for Blister ... grapheme and words. 5KW Double-Head high frequency plastic welding machine