Wed, Dec 26, 2012 12:00 - Micron Enviro Systems Inc. (MSVS: OTC Link) - Tier Change - The symbol, MSVS, no longer is classified as OTC Pink Limited. As of Wed, Dec 26, 2012, MSVS resides in the OTC Pink Current tier. You may find a complete list of tier changes at otcmarkets.com.