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Durability: 2000-20000 hours; Application: printer tax printer intelligent three-phase meter electric toys Vehicle electronic (vehicle traveling data recorder DVD navigation etc.) dynamic uninterruptible power system back-up power supply short-term energy compensation power electric bicycle instrument and meter electronic door locks LED display car audio UPS solenoid valves electric toothbrushes portable PC solar energy spike lamp small equipment backup power supply intelligent water meter gas meter cash registers and so on.