Filed under Green Tech Nanosensors, Inc. (OTCBB: NNSR) SmartCities, IOT & Wireless 5G/6G Announces Acquisitions … Published by on November 16, 2018 NanoSensors, Inc. (dba Green Zebra) (OTCBB:NNSR) Announce Plans to Expand SmartCity & 5G/6G Technology in Emerging Telecommunications …