half spiral energy saving lamp 2,100% Tir phosphor 3,Real ... up to 80% energy saving comparing with incandescent Bulbs5.8000hours long life and 1 year quality guarantee (calculated 3 ... , offices etc, where requires lighting for long time3.high wattage lamps are specially for street, square, parking ... over heated,over current, over voltage,short-circuit,broken-circuit and so on, is rarely available in ...