... saving Certificate: CE,ROHS,OEM,SAA environment friendly half spiral energy saving lamp 20Wspecification:wattage: 20Wplastic part material: PBTpure ... material4.long life5.80% energy saving6. Excellent light distribution 7.High Rendering index 8. Wide application: house, hotel, office, ... any flick, and they are of high light flux, high light effect, high color rendering index and good color maintenance ...