Ningbo Kingdun Electronic Industry Co.,Ltd., established in 2000, is an experienced 10 Y Smoke Alarm Manufacturers, professional 10 Y Smoke AlarmCustom and other safety alarms, We have 8 SMT lines and 4 automatic communication Hole production line, 8 final packaging lines and 1 automated injection room. All our 10 Y Smoke Alarm and other alarms are 100% calibrated and controlled under our efficient ISO-9001 quality system.