Question: who is the best 3d printing company?
Answer: HP (NYSE:HPQ) Market cap: US$23.95 billion. ... 
Proto Labs (NYSE:PRLB) Market cap: US$2.91 billion. ... 
Materialise (NASDAQ:MTLS) Market cap: US$1.21 billion. ... 
Stratasys (NASDAQ:SSYS) Market cap: US$823.63 million. ... 
3D Systems (NYSE:DDD) ... 
ExOne (NASDAQ:XONE) ... 
SLM Solutions Group (FWB:AM3D) ... 
Nano Dimension (NASDAQ:NNDM)