Heliospectra AB (publ) (OTCQB: HLSPY, FIRSTNORTH: HELIO), a world leader in intelligent lighting technology for controlled environment horticulture, today announced its exhibition at the Marijuana Business Conference and Expo, November 16-18, 2016 in Las Vegas, Nevada. Heliospectra will showcase integrated LED light systems in booth #235, meeting with more than 9,500 medicinal cannabis cultivators, licensed facility owners and industry leaders during the