3D printing (3DP), a type of additive manufacturing technology, is a technology that uses a digital model file as the basis for constructing an object by printing layer by layer using an adhesive material such as powdered metal or plastic.

3D printing is usually achieved using digital technology material printers. It is often used to make models in fields such as mold making and industrial design, and then gradually used in the direct manufacturing of some products, and there are already parts printed using this technology. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and other fields.

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