... .6mm Surface processed with electricity draws to black color high quality bundy tube condenserWe can produce condensers for refrigerator, freezer, icebox ... Surface with electrophoretic coating, thickness 10-25micrometer,black6. The tube ends sealed with rubber cap7. Dry nitrogen in the tube8 ... . Condensers for refrigerator, freezer, ice cabinet, water dispenser. high quality bundy tube condenser