The following video is part of our "Motley Fool Conversations" series, in which analyst John Reeves and advisor David Meier discuss topics across the investing world.

3-D printing has the potential to change the world, but it's still very early for this new technology. Stratasys and 3D Systems are two of the leading 3-D printer companies out there today for investors to consider. Over the long run, businesses and individuals will find more and more ways to get value out of 3-D printing, and that will make these two companies very valuable.

Big tech names might garner a lot of investor attention, but the truth is that they're playing second fiddle to an even larger revolution in technology. To better prepare investors for this new revolution, The Motley Fool has released a free report on mobile called "The Next Trillion-Dollar Revolution" that details a hidden component play inside mobile phones that also is a leader in the exploding Chinese market. Inside the report, we not only describe why the mobile revolution will dwarf any other technology revolution seen before it, but we also name the company at the forefront of the trend. Hundreds of thousands have requested access to previous reports, and you can access this new report today by clicking here -- it's free.