|STR Holdings, Inc., along with its subsidiaries, is a provider of encapsulants to the solar industry. The encapsulant is a critical component used in solar modules. The Company had developed the ethylene-vinyl-acetate (EVA)-based encapsulants for use in commercial solar module manufacturing in conjunction with the Jet Propulsion Laboratory of the California Institute of Technology under a NASA contract for the United States Department of Energy and Development Administration. The Company's encapsulants are used in the solar panel technologies, including crystalline silicon and thin-film. On September 1, 2011, the Company completed the sale of its quality assurance business (QA) to Underwriters Laboratories, Inc. The Company's solar encapsulants are marketed under the trade name, PhotoCap. The Company's solar encapsulants are marketed under the trade name, PhotoCap.