... design for tents, canvas, PVC fabric tarpaulin products sealing High frequency tarpaulin welding machine1.NL-5557 anti-spark vacuum tube protection ... skates, accurate position and flexible action;3.Usage:PVC material high frequency welder is suitable for tents, tarpaulin, PVC coat fabric, ... *25001000*1800*25001000*1800*2500Net Weight400KG400KG500KG700KG900KG Fabric Tents high frequency welding machine