... 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper, plastic, carbon ... drawings, either small or large quantity is acceptable for us.We are sincerely expecting to cooperate with you ... , copper, aluminum, plastic, or customer specified. Finishes:Anodizing, Electroplating, Polishing, Powder Coating, Blacken, Hardening, Painting and many other ...