... 2.Surface:mirror polishing 1. Investment casting/precision casting/sand casting/die casting/lost wax casting.2. Material: carbon steel, alloy ... casting, such as heat treatment, machining, polishing, and Painting, galvanized.7. Supplier of castings, machinery parts, machining parts, valve&pump parts, auto parts, train parts, marine parts ... Samples are available for quality check. casting machinery parts