London EV Company London EV Company London EV Company Limited (LEVC, formerly The London Taxi Corporation Limited trading as The London Taxi Company) is an automotive engineering company with its headquarters near Coventry, United Kingdom, and a wholly owned subsidiary of Chinese automaker Geely. The company is famous for its London black taxicabs. Geely's involvement in British taxicab production dated to 2006 when it partnered with LEVC's predecessor The London Taxi Company, and its parent Manganese Bronze Holdings, in the creation of a China-based taxicab manufacturing joint venture. In 2009 Geely bought shares in Manganese Bronze Holdings. In 2012 Manganese Bronze Holdings entered
Manganese(II) sulfate highly characteristic. Typically, manganese ores are purified by their conversion to manganese(II) sulfate. Treatment of aqueous solutions of the sulfate with sodium carbonate leads to precipitation of manganese carbonate, which can be calcined to give the oxides MnO. In the laboratory, manganese sulfate can be made by treating manganese dioxide with sulfur dioxide: It can also be made by mixing potassium permanganate with sodium bisulfate and hydrogen peroxide. Manganese sulfate is a by-product of various industrially significant oxidations that use manganese dioxide, including the manufacture of hydroquinone and anisaldehyde. Electrolysis of manganese sulfate yields manganese dioxide, which is called EMD