I am in the medical device business and often need 3D printed prototypes for R&D, and would like to find a supplier who prints prototypes that can be used for real-world testing (need to do motion)?

If you are looking for metal parts, we recommend that you look for a manufacturer that has laser sintering equipment, as normal equipment cannot print metal parts.

If it is non-metallic, then the one you mentioned is still good, worth choosing. Specifically you need to ask yourself