... introduction for CNC prototype:1. Our factory specializes in precision CNC Aluminum prototype making,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 ... :Customize micro(3*3*3mm) -to-medium size and high-precision plastic part and plastic injection mould for electronic/electrical,industrial ...