die casting aluminium 1.machine screw size,M3-M36 2.carbon, stainless ... 3.zinc plated,black,etc 4.flat,pan, etc. die casting aluminium 1.Surface Finish: annealing, natural anodization, heat treatment, polishing ... ourself to smile to each customer1)Details: Product name die casting aluminium Material1.Stainless Steel: SS201, SS303, SS304, SS316, SS416, SS4202 ...