Greenbelt Resources Corporation Greenbelt Resources Corporation (OTC: GRCO) designs, manufactures, operates, and sells modular sustainable energy production systems that convert food wastes, beverage wastes, and other cellulosic materials into commercially viable products including advanced biofuels such as bio-ethanol, animal feed, fertilizer, filtered water, and distilled water; these small-scale, end-to-end systems are controlled by proprietary automated technologies like the Butterfield Closed Cycle System™ and ethanol dehydration modules featuring zeolite ceramic membrane tubes. The company provides end-to-end waste-to-ethanol solutions for localized processing of locally generated waste into locally consumed outputs, targeting industries such as dairy processing, renewable energy, and waste management with customers including third-party buyers and self-deployed projects. Founded in 2001 and headquartered in Paso Robles, California, Greenbelt Resources Corporation operates primarily in the United States with a focus on North American markets. In recent years, the company expanded operations by converting its facility to bioethanol solvent production and opening a new location to fulfill orders as of August 2019; it signed its first client system sale with New Age Renewable Energy (NARE) for a project in Iceland and formed a joint sales collaboration with NARE for dairy waste processing solutions in July 2019. These developments reflect strategic shifts toward custom system manufacturing, international partnerships, and enhanced processing capabilities for non-traditional feedstocks like duckweed, alongside reported Q4 2018 profitability and positive cash flow in early 2019 financial statements.