Selective Laser Sintering (SLS) uses an infrared laser to sinter powdered material, typically plastic, metal, ceramic, or glass, binding the material together to create a solid structure. SLS builds parts by fusing material layer by layer from the bottom up, without the need for additional support structures. Among several common 3D printing technologies, it has the highest material utilization rate and is relatively cheap.

Stereo Lithography Apparatus (SLA) uses an ultraviolet laser beam to selectively cure a polymer resin layer by layer to create objects. It is suitable for making fine parts, and the surface quality is smooth. SLA always requires a support structure. The material is usually a photosensitive resin.

Selective Laser Melting (SLM) harnesses the power of focused laser energy to fuse fine metal powders, layer by layer, into solid structures directly from digital blueprints. It stands out for its remarkable capability to transform metal and superalloys into complex, high-strength components with unparalleled precision. It is particularly suitable for aerospace, medical, molds, automotive parts and other fields.