ERHC Energy Gross Margin 2010-2017 | ERHE

ERHC Energy gross margin from 2010 to 2017. Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.

ERHC Energy Gross Margin 2010-2017 | ERHE

ERHC Energy gross margin from 2010 to 2017. Gross margin can be defined as a company's total sales revenue minus its cost of goods sold, divided by the total sales revenue, expressed as a percentage.