... Professional service 7. Process: sand process casting 8. Application: pump parts 9. Surface treatment: Polishing, machining, machining center, platting ... , heat treatment, ect If you are interested in our items, let us know. Pleased send us your ... mirror polishing.8.ServiceOEM service available9.Productcasting copper alloy pump and valve parts (unit weight ≥1kg)10.AdvantageGood quality ...