(Reuters) - Shares of companies that sell 3D printers fell on Thursday after Citron Research said they were vastly overvalued and that the technology, highlighted this week by U.S. President Barack Obama, has been hyped.Citron报告：
http://www.citronresearch.com/wp-content/uploads/2013/02/DDD-final.pdf
It is obvious that Obama has been listening to Ping Fu, a representative for 3D Systems (CEO of a tiny software company acquisition target) as she has become a press darling and a
mascot for the whole 3D printing industry. We are not going to use this column to disparage Ping Fu, but she is not shy of promoting herself or her industry beyond boundaries of realism:
http://www.thedailybeast.com/articles/2013/02/11/the-persecution-of-ping-fu.html
BBC:Ping Fu: 3D printing is 'as big as the internet'
http://news.bbc.co.uk/2/hi/programmes/hardtalk/9788066.stmMotley Fool对傅苹的吹捧
http://www.fool.com/investing/general/2013/02/14/yes-you-will-be-able-to-print-food-in-the-future.aspx
http://www.fool.com/investing/general/2013/02/07/this-controversial-book-has-many-dimensions.aspxhttps://www.google.com/search?q=Ping+Fu+site%3Afool.comCEO of 3D Systems力挺傅苹
http://www.thedailybeast.com/articles/2013/02/04/ping-fu-defends-bend-not-break-memoir-against-online-chinese-attack.html
As the controversy has gained steam, the author also has received support from fans and colleagues near—the CEO of 3D Systems, which is set to acquire Geomagic, comes from a family of Holocaust survivors and has encouraged her to “be strong”—and far.