Acid proof brick and plate are widely applied in petroleum, chemical industry, medicine-making, food, paper-making, chemical fertilizer, agriculture, pesticide, chemical fibre, textile industry, smelting, and power-generating plants etc., and anti-corrosion inner liner of tower, pool; pot, sinks, what's more, it also plays leading anti-corrosion role in waste water treatment and open air working grounds. Acid-resistant ceramics can resist most media except hydrogen-arc acid, thermal alkali and thick alkali, and has better anti-corrosion effect in moist chlorasalt, hydrochloric acid etc. and any alkali under normal temperature.