TANH stock has recently surged by 49% following the announcement of a $5 million annual purchase agreement with Heidi Enterprise Group, reflecting strong momentum. However, its RSI of 71.7 indicates overbought conditions, suggesting caution for short-term investors. The stock closed at $0.23 on December 31, 2024, with a 52-week high of $1.59, leaving room for potential upside if the U.S. market expansion strategy succeeds.