... Component Material availableBrass,Copper,Kovar,Invar,WCu,Stainless steel, Aluminium, White/Black Delrin etcFinishGold/Ni/Silver plating, Bkackening, Anodization, Passivate, Sand ... from 90% customer after the trial orders.7.Making progress with customers together. Equipment Brass Precision Component with Good Quality