20 years of production history, the annual production of zinc oxide 20.000 tons, titanium dioxide(rutile, anatase): 18,000 tons, caustic soda pearls(membrane process): 40,000tons. Caustic soda fleaks: 25,000 tons. Copper sulphate(feed additive): 15,000tons. Carbon black: 35000 tons, chrome oxide Green: 15,000 tons, iron oxide(red, yellow): 15,000tons, lithopone: 18,000 tons. Products sell well in more than 20 provinces and cities and exported to Europe, America and Southeast Asia too.