my company make all kinds of the welding submerged liner and other mig /tig plasma torch and accessory my factory specialized in manufacturing the mig torch and accessory ,1)accessory :welding liner(submerged welding liner ,Teflon liner , ) , nozzle , contact tip , tip holder .swan neck 2)material for the welding liner :steel. aluminimu 3)certificate :ISO9001:2000 and CCC certificate