3U energy saving lamp 1.strict raw material inspection 2.100% aging line testing 3.on-site quality inspection Offer 3U energy saving lampwattage:7W,9W,11W,11W,18W,26Wvoltage:110-130v, 220V-240VTube Diameter: 9, 12 mmLamp base: E27/B22Temperature: 2700K/4000K/6400K/ color