... or description.1) material: can be steel, brass, stainless steel, Aluminium…2) surface treatment:kinds of plating (Zinc, Nikel, Chrome, ... Tin, Ag); Painting, Powder, Andizing,coating, Silkscreen, Heat treatment, Black anodized; 3) producing scope: cnc ,Investment Casting ,metal stamping ,4 ... requirement workshop & powder coated department : aluminum investment casting part with black anodized