... ,C45,carbon steel,alloy steel,aluminiumhigh quality machining part 1) Material: Steel, Brass, Copper, Stainless steel, Aluminium, Titanium Alloy etc.2) Surface treatment ... , Passivation, Sand blasting, Brushing and polishing etc.3) Our services:Machining, Turning, Milling, Stamping, Casting4) Drawing format. pdf/.dwg/.igs./.stp ...