CASTON Inc. as a joint-stock enterprise integrating with research, production, selling and service, is specialized in crystal area. In July 2008, CASTON formally took over Fuzhou Kaston Optronics Manufacturing Ltd. (KASTON), and retains all professional and technical personnel KASTON has had, as well as continues 15 years’ professional techniques on growth and fabrication of non-linear optical crystals (especially BBO and LBO).