The Net Margin of ERF Wireless Inc (ERFB) is -101.51%.
Net Margin measures the percentage of net income derived from total revenue after all expenses. It signals how much actual profit a company retains from its sales.
| Date | Value |
|---|---|
| 2013-12-31 | -101.51% |
| 2012-12-31 | -65.69% |
| 2011-12-31 | -63.52% |
| 2010-12-31 | -229.53% |
| 2009-12-31 | -160.35% |
| 2008-12-31 | -227.78% |
| 2007-12-31 | -126.93% |
| 2006-12-31 | -304.07% |
| 2005-12-31 | -532.81% |
| 2004-12-31 | -218.18% |