3-D printing has a massive opportunity to revolutionize the industrial manufacturing industry. However, a recent sell-off in the sector has sent the stock prices of many companies spiraling down during 2014.  ExOne (NASDAQ:XONE) has been among the hardest hit, seeing a 40% drop in its market cap during the past six months alone.

However, Rule Breakers analyst Simon Erickson thinks there is still plenty to like in this company. In the following video, he points out three important things that investors should keep an eye on at ExOne, and why the company could prosper as 3-D printing continues to mature.

Simon Erickson owns shares of ExOne. The Motley Fool recommends ExOne. The Motley Fool owns shares of ExOne. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.