... plastic 4.long lifespan 15W half spiral energy saving lamp voltage110v/220vFrequency50/60HzAverage lifespan8000HoursOptional baseE27/B22/E14Optional color ... tube.Compact shape, soft light to protect your eyesSuitable places:Apply to supermaket,boutique,furniture town,clothing store ... -be first class in this industry,create value for our customer.3.Management conception-cooperation,sharing,growing ...