DUNGS双段火燃气组合磁阀型号MB-DLE405B01S20, MB-DLE407B01S20, MB-DLE410B01S20, MB-DLE412B01S20, MB-DLE410B01S50, MB-ZRDLE410B01S20, MB-ZRDLE412B01S20, MB-ZRDLE412B01S50, MB-ZRDLE420B01S20,MB-DLE420B01S20，MBDLE405
