Ultra-DEZHI采用丁基膜是絕對無毒和適用于飲用水。這種膨脹罐容積利用率高，采用可更換的膜，壓力罐用于防火系統和水密封系統。
Ultra-DEZHI with butyl membrane are absolutely non-toxic an potable drinking. This model  of tanks，   also for their reduced volumes， are replaceable membrane pressure tanks for fire protection systems and water pressurizing systems.