... controlled 4, Secondary process available 5, OEM aluminum 6061 casting aluminum partAbout usYaopeng was founded in 2005 as a ... parts, including CNC machining, stamping meatal parts, and Casting. We are committed to provide high quality products ... Surface treatment:Zinc plating, Anodization, Chemical fim, Powder, Passivation, Sand blasting, Brushing & ploshing etc.3) Our services:Machining, Turning, ...