Spire Corporation (Spire) is engaged in the developments in solar cell technology. The Company and its subsidiaries, along with its variable interest entity develop, manufacture and market highly-engineered products and services in two principal business areas: capital equipment and systems for the photovoltaic solar industry and biomedical, through its variable interest entity, N2 Biomedical LLC (N2 Bio). The Company develops, manufactures and markets capital equipment and services for the solar photovoltaic industry, including turn-key solutions and individual pieces of manufacturing equipment and full turn-key lines for cell and module production and testing. The Company is a supplier of the manufacturing equipment and technology needed to produce solar photovoltaic modules. During the year ended December 31, 2013, the Company�s solar business was responsible for 53% of its revenues.