... the quality 4.OEM service Item NO. jig and fixture design for sand casting productsMaterialsIron, aluminum, steel, copper, plastic, carbon steel, ... so on;4, Standard: according to the dimension tolerance of machining of customers’ requirement; 5, Surface roughness: Ra0.8-3. ... the goods according to your special requirement for the packing duing the specification of different goods;9,Payment term :T/T ...