... 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper, plastic, ... (rust-prevented), nickel-plated, hot-galvanized, sandblasting, zinc plating,chrome plating, painting, anodization, E-coating, ... Machining parts, CNC milling and turning parts , CNC milling parts, CNC lathe turning parts, grinding parts, stamping parts, casting and forging parts, ...