SGLB has been involved with tier one 3DP players and participating in industry conferences for several years.
It validates them for sure.
But my point is/has been, that revenue growth drives share prices. For a while that wasn't the case in 3DP stocks (much of 2013/early 2014). But it matters again now, and that's as it should be in a healthy market.
They can attend and host all the additive conferences in the world and it won't matter if they don't fully commercialize PrintRite3D.