This document provides an overview of natural gas liquids (NGLs) including their physical properties, major uses, sources of production, infrastructure and markets. It discusses: - NGLs such as ethane, propane, butanes and natural gasoline which possess characteristics of both oil and gas. - Their various industrial uses including petrochemicals, heating, power generation and agriculture. - U.S. NGL production is forecast to continue increasing significantly through 2025 driven by natural gas production. - Major NGL pipelines and infrastructure including fractionation facilities and storage hubs like Mont Belvieu that connect production to markets. - Growing exports of NGLs like propane