Purebase Corporation, an industrial mineral and natural resource company, provides solutions to the agriculture and construction materials markets in the United States. It offers PureBase Shade Advantage WP, a natural mineral plant protectant that reduces sunburn damage to plant tissue exposed to UV and infrared radiation. The company also provides humic acid products; and private labels product for other agricultural companies. It exports its products to Vietnam, Laos, and Cambodia. The company was formerly known as Port of Call Online, Inc. and changed its name to Purebase Corporation in January 2015. Purebase Corporation was incorporated in 2010 is headquartered in Ione, California.