Partnership Allows Cork Supply to Source Directly A partnership with cork growers in Portugal marks the first time a supplier will effectively be able to control cork quality and supply from forest to bottle, Cork Supply claims. Cork Supply, "America's largest provider of premium wine cork" with affiliates in Europe, Australia, Asia, South Africa and South America, is now an equal partner in Equipar, Ltd., Portugal's forest management, raw product sourcing, nursery, and cork processing firm, whi...