... function Water proofing and roofing welder, PVC Roofing welding machine,Plastic welding machine(PVC,TPO ,EVA membrane) Description:This ... such as roofing sheets, container cover, advertising cloth, plastic cloth. Temperature continuously adjustable,high precision. Smooth,high speed ... : 40mm Water proofing and roofing welder, PVC Roofing welding machine,Plastic welding machine(PVC,TPO ,EVA membrane)