Fri, Apr 19, 2013 12:00 - Advanced Defense Technologies, Inc. (ADCF: OTC Link) - Tier Change - The symbol, ADCF, no longer is classified as OTC Pink No Information. As of Fri, Apr 19, 2013, ADCF resides in the OTC Pink Limited tier. You may find a complete list of tier changes at otcmarkets.com.