... roofing welder, PVC Roofing welding machine,Plastic welding machine(PVC,TPO ,EVA membrane) Description:This welding machine can add weight additional ... the convenience , it become a ideal product for welding PVC,TPO ,EVA membrane.Feature:Welding products for large-scale sheet and ... roofing welder, PVC Roofing welding machine,Plastic welding machine(PVC,TPO ,EVA membrane)