... and charge air cooler,made by cast aluminum alloy,OEM order is accepted Material: aluminum alloyCAC tank parts for vehicle radiator ... and charge air cooler,made by cast aluminum alloy,OEM order is acceptedCasting to be tested with 3.0BAR air pressure under ... finish process: polishing shot blasting, chromate plating, power coated and anodizing OEM and ODM parts range: auto parts, electronic parts, ...