... following is the brife introduction for CNC prototype:1. Our factory specializes in precision Aluminum CNC machining part,plastic prototype,metal prototype as per ... ,PP,PPS,PEI,PEEK,PTFE,etc; various metal: Aluminum,Zinc,Brass,Copper,magnesium,45# steel,stainless steel,etc. 3. Surface treatment ... ,Middle East,Australia. If you have any interest in our products,please feel free to contact us.