... the brife introduction for CNC prototype:1. Our factory specializes in precision Aluminum CNC machining part,plastic prototype,metal ... Aluminum,Zinc,Brass,Copper,magnesium,45# steel,stainless steel,etc. 3. Surface treatment available: ... 3*3mm) -to-medium size and high-precision plastic part and plastic injection mould for ... design.Our principle is to take quality as the first consideration with sincere ...