... Covers,Canvas,Membrane. Main Application of High Frequency welding machine:Applied for tarpaulin, sunshading canvas, painting canvas, film ... Machine can be fitted with special curved electrodes for welding round window profiles made of clear PVC and any ... pools, ground liners, ecomembranesAdopt the High frequency welding technology for welding liquid tanks,canvas,car tents,tarpaulin,air structure,sun ...