3D printing is a rapid prototyping technology, which is based on digital model files and uses adhesive materials such as powder metal or plastic to construct objects by printing layer by layer. 3D printing is usually realized by a material printer using digital technology. It is often used in mold manufacturing, industrial design and other fields to make models, and then gradually used in the direct manufacturing of some products. Parts already printed with this technology. This technology has been applied to jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automobile, aerospace, dentistry and medical industry, education, geographic information system, civil engineering, guns and other fields.

Rapid prototyping manufacturing is a manufacturing technology that can quickly generate models or parts. Under the control and management of the computer, relying on the existing CAD data, materials are accurately stacked, that is, from point to surface, from surface to three-dimensional, and finally entities are generated. With this technology, very complex entities can be generated, and the molding process does not need the assistance of molds.

Rapid Prototyping (RPM) is the integration of mechanical engineering, computer technology, numerical control technology and material science, which can quickly and automatically materialize existing mathematical and geometric model designs into prototypes or parts with certain structures and functions.