... Gravity Casting Part 1.OEM service offered 2.ISO9001 quality system 3.High quality and competitive prices Aluminum Gravity Casting Part 1. ... etc.6.Surface treatment:according to the drawings, polishing,zinc plating,chrome plating,nickel plating and etc. As the ... difficulty, which is powerful in production technology, high in machining accuracy and quality, especially in casting and forging the parts ...