... of welding manufacture. welding frame seat-back for bus AL-0089 welding bus seat parts, bus seat back partsSpecification:according to drawins and ... AdvantageExperienced technical staff Benz,AG,Germany's supplier of welding seat base Quality certificat: ISO9000:2008 , EN15085-2, ISO3834 ... in manufacting car, bus, train and autobike's spare parts and all products need to technique such as welding, ...