The Gross Margin of ERF Wireless Inc (ERFB) is 41.88%.
Gross Margin represents the percentage of revenue that exceeds the cost of goods sold. It reflects a company's efficiency in producing and selling its products.
| Date | Value |
|---|---|
| 2013-12-31 | 41.88% |
| 2012-12-31 | 45.76% |
| 2011-12-31 | 34.17% |
| 2010-12-31 | 24.57% |
| 2009-12-31 | 41.19% |
| 2008-12-31 | 39.46% |
| 2007-12-31 | 25.85% |
| 2006-12-31 | 26.16% |
| 2005-12-31 | 42.19% |
| 2004-12-31 | 72.73% |