... : ±0.01 3.Surface-treatment: shot blasting4.Process: die casting, precision cnc machining, drilling. WELCOME TO INQUIRY CHONGQING JINTERUI MACHINE CO.,LTD ... ,new products designing & developing,as well as mould making. Precision CNC Machining Parts Material Aluminum, Steel, Stainless steel, Aluminum alloy,Brass, etc.Surface ...