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and run for minutes. the process is normally repeated twice to ensure complete removal of the manganesedioxide. when sodium hypochlorite is used, the residual chlorine should be removed with sodium bisulfite or hydrogen peroxide. adding jeans to a machine already charged with after wash chemicals will...
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manganese is a common element found in minerals, rocks, and soil. it is also a normal part of a healthy diet, but can be harmful if consumed in excess. how are people exposed to manganese?...
president of solarworld america, told reporters the unanimous vote showed "very clearly" that u.s. producers had been harmed by the imports, adding that stringent enforcement is needed to prevent the chinese from circumventing the orders. the united states imported about usd . billion worth of solar cells...
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