The Gross Margin of Premier Graphene Inc (BIEI) is 9.94%.
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 |
|---|---|
| 2019-12-31 | 9.94% |
| 2018-12-31 | -185.75% |
| 2017-12-31 | 36.02% |