Solar Thin Films, Inc. is engaged in the business of designing, manufacturing and installation of thin-film amorphous silicon (a-Si) photovoltaic manufacturing equipment. The equipment is used in plants that produce photovoltaic thin-film a-Si solar panels or modules. The Company operates through its wholly owned subsidiary, Kraft Elektronikai Zrt (Kraft). Kraft is engaged in the design, development, manufacture, and installation of a-Si photovoltaic manufacturing equipment. The primary buyers of photovoltaic thin-film manufacturing equipment are businesses, as well as investment partnerships, engaged in the production of photovoltaic thin-film modules. In May 2010, the Company acquired Atlantis Solar LLC. In May 2013, Solar Thin Films Inc acquired Quality Resource Technologies Inc.