My investment focus is on companies that are in the early stages of commercialization and of disrupting an industry. Generally, startups go from product development stage to proof of concept stage, and if successful, go on to the commercial stage and then they scale. This article will introduce two new early-stage disruptors that I learned about from their presentations at recent investor conferences and one I learned about from a reader suggestion. I would consider all three late in the proof of concept stage, although the third stock discussed has an established business model to