... than sulfuric acid, hydrochloric acid, nitric acid. Use: Industrial Grade (85% 80% 75%), satisfy with the GB2091-2003Mainly use for phosphate, fertilizer, alum timber ... you.Now we can produce PVC Resin,Stearic acid,SHMP,STPP, Sodium Gluconate,Phosphoric acid,Titanium Dioxide,Zinc oxide,etc.Please feel ...