Founded in 1979, Greenhouse System USA Inc. is a company that builds greenhouse that provides a variety of other related services. Based in Watsonville, Calif., the firm is a builder of robust, climate controlled greenhouses. The company specializes in custom commercial structures, prebuilt hobby units and full maintenance services. It has affiliations with a number of organizations that include Bosman B.V., Bercomex, AGC Flat Glass North America Inc., Acrylite, Lock Drives Inc. and Mardenkro, among others.