Green water treatment agentGao Tie acid sodium ( Na2FeO4) preparation3NaClO (sodium hypochlorite ) + 2Fe ( OH) 3 ( ferric ) + 4N Refined petroleum, printing and dyeing, paper making, lime improved soil, the old rubber, leather, aluminum and aluminaTextile fibers, chemicals and chemical reagents, precipitated silica, tungsten smelting industry, electroplating, instrument used as acid neutralizing ...