Google it and find out yourself.
I don't understand this hype in DDD.
They may be the marketleader but IMO some of their products are inferior to other 3D companies.
Sure they are a frontrunner and are very active in the industry.
They have the biggest marketcap but can anybody give me an example of where DDD's products are better than those of SSYS, ARCAM, XONE or EOS?