SLA is one of the three key technologies used in 3D printing, and the other two are fused deposition molding (FDM) and selective laser sintering (SLS). Belongs to photosensitive resin 3D printer type. Generally, the technology similar to SLA is called digital light processing (DLP). It symbolizes the development of second language acquisition, using projection screen instead of laser.
3D printing is a rapid prototyping technology. It is a technology based on digital model file, using adhesive materials such as powder metal or plastic, and constructing 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.