CNC machining is already very mature. Has been widely used in various fields of industrial production, automobile manufacturing, mold making, aerospace and so on. A variety of materials can be CNC machined, parts with high precision, excellent assembly performance, the surface can be a variety of treatment, such as: anodizing, Powder coating, brushing. etc. At the same time, the production time is short, can be put into use soon. From the 90's, with the increasing demand for industrial production, in order to meet the needs of design and development. CNC machining service has also been applied to the rapid manufacturing [...]