... ,1 year warranty >Intelligent control,automatic welding AUTOMATICAL HOT AIR FLEX BANNERS,BILLBOARDS BANNERS,PVC,PE,PP,FABRIC,TENTS,TARPAULIN ... is not more than 50 square meters.Application of Hot Air Welder for Welding PVC Banners: Welding and joining separate ... edge-works of the pieces. Technical Parameter of Hot Air Welder for Welding PVC Banners:ModelMODEL 4000IMODEL 4000LVoltage/Frequency220V+/-10 ...