首页>
外国专利>
A procedure for regeneration of SO2 and Na2O in the elements residuarias Liquor from Cooking of Cellulosic material, in particular to a SODIUM SULFITE Solution.
A procedure for regeneration of SO2 and Na2O in the elements residuarias Liquor from Cooking of Cellulosic material, in particular to a SODIUM SULFITE Solution.