Sinorama Corp (SNNN: Grey Market) | Tier Change Sat, Jul 11, 2020 12:00 - Sinorama Corp ( SNNN : Grey Market) - Tier Change - The symbol, SNNN, no longer is classified as Pink No Information. As of Sat, Jul 11, 2020, SNNN resides in the Grey Market tier. You may find a complete list of tier changes at otcmarkets.com .