... . 2.Digital display 3.For welding PVC,TPO ,EVA membrane Plastic hot air welding machine,PVC hot air welderDescription:This ... become a ideal product for welding PVC,TPO ,EVA membrane .FeatureUsded for welding membrane materials, poster cloth, printing cloth, pvc flex ... welding pressure is changed according to the thickness of the waterproof membrane to make sure of. the solid and reliable welds. ...