... Process:die casting 3.Finish:polishing,anodizing,etc 4.Custom Permanent mold aluminum castings Our Process involves sand casting, shell molding ... certified. 1) Molding Process:Lost wax precision casting, Shell casting, Permanent mold Gravity die casting, Die castings(High pressure/Low pressure ... and door, Expansion bolts…6) Manufacturer certification:ISO9001 (2000) Permanent mold aluminum castings