Theoretically anything which can be digitally visualized can be printed. The only limitation at present is the restriction on size and material which can be applied for 3D printing. It is being extensively used for art, industries, space research, health care and other industries. Here is one SLS printing project made in Tuowei.
The advantages of SLS printing,
1.Good mechanical properties
2.High tolerance+-0.1mm
3.Cheap material cost
4.No need to design support structure in the process
5.Fast prototyping to test the fitness, functional test
6.Shorten the new product development cycle