... half spiral energy saving lamp 2,100% Tir phosphor 3,Real power:>85% 4,Lifetime:6000~10,000hrs 5,CE,(EMC ,LVD)ROHS,SAA,TUV, half spiral energy saving ... 4..up to 80% energy saving comparing with incandescent Bulbs5.8000hours long life and 1 year quality guarantee (calculated 3. ... hotels, offices etc, where requires lighting for long time3.high wattage lamps are specially for street, square, parking lot ...