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| RENEWABLE ENERGY GROUP, INC. SUBSIDIARIES | | |
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| REG Biofuels, LLC | | Iowa |
| REG Marketing & Logistics Group, LLC | | Iowa |
| REG Services Group, LLC | | Iowa |
| REG Capital, LLC | | Iowa |
| REG Synthetic Fuels, LLC | | Iowa |
| REG Life Sciences, LLC | | Iowa |
| REG Canada Holdings Inc. | | British Columbia |
| REG Construction & Technology Group, LLC | | Iowa |
| REG Ventures, LLC | | Iowa |
| REG Ralston, LLC | | Iowa |
| REG Houston, LLC | | Texas |
| REG Danville, LLC | | Delaware |
| REG Albert Lea, LLC | | Iowa |
| REG Newton, LLC | | Iowa |
| REG Seneca, LLC | | Iowa |
| REG New Orleans, LLC | | Iowa |
| REG New Boston, LLC | | Iowa |
| REG Mason City, LLC | | Iowa |
| REG Emporia, LLC | | Iowa |
| REG Clovis, LLC | | Iowa |
| REG Atlanta, LLC | | Iowa |
| REG Okeechobee, LLC | | Iowa |
| REG Geismar, LLC | | Delaware |
| REG Grays Harbor, LLC | | Washington |
| REG Madison, LLC | | Wisconsin |
| REG Bioproducts, LLC | | Iowa |
| REG Feedstock, LLC | | Iowa |
| REG Overseas Holdings B.V. | | Netherlands |
| REG International Trading & Commodities B.V. | | Netherlands |
| REG Germany GmbH | | Germany |