die casting aluminium 1.machine screw size,M3-M36 2.carbon, stainless steel ... .zinc plated,black,etc 4.flat,pan, etc. die casting aluminium 1.Surface Finish: annealing, natural anodization, heat treatment, polishing, nickel ... been in constant pursuit continous progress.6.We commit ourself to smile to each customer1)Details: Product name die casting aluminium Material1 ...