Founded in January 2004, Shanghai Optical Storage Technologies Co., Ltd. (hereinafter referred to as ?SOST?) is a joint venture invested by Shanghai Video and Data Telecommunication Company, Future Finance AG of Switzerland and Other Shareholders, in which Shanghai Video and Data Telecommunication Company, subsidiary of Shanghai Telecom, contributes the major investment.

SOST manufactures blank DVD disc and develop related technologies. With the efficient support from shareholders in capital, technique and market, SOST is satisfying customers with high-quality blank DVD discs by committing leading technologies, professional manufacturing and honest service.