3D printing is a rapid prototyping technology, which is based on a digital model file, the use of powdered metal or plastic and other materials can be bonded by layer by layer to construct the object technology.

3D printing is usually used as a digital technology to achieve the material printer. Often used in the field of mold manufacturing, industrial design and other fields are used to create a model, and then gradually used for direct manufacturing of some products, there have been the use of this technology to print the parts and components. The technology in the jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, medical and dental industries, education, geographic information system, civil engineering, guns and has applications in other areas.