... . more elegant and tightly.4. Low light decline, low energy loss. 5. Mature product , High reliability. 6. Strong production capability . 7 ... with a high luminous efficacy .Saving 80% energy than incandescent bulbsFlicker free instant start.The lamp base is made of high-quality PBT ... products, such as 2U, 3U and 4U Spiral lamps, Straight tubes and Circular tubes. energy-saving lights(half spiral cfl)