Tinfos is a private Norwegian holding company. Its roots dates back to 1875, and has today the head office in Oslo, Norway. The firm is one of the oldest companies in its field of activity in Europe. Its main products are silicomanganese, High Purity Pig Iron and titanium dioxide. The company is structured in 4 different divisions. Tinfos AS was sold 15 April 2008 to the French-based manganese company Eramet.