Spiral series characteristics: 1.uses the advanced electronic circuit design technology,using flame-resistant material,with highly effective radiation and insulation 2.the spiral design ,enable the luminous flux to obtain the maximusm limitation 3.saving electricity with remarkable energy conservation effect,conserving 80%energy in comparing with the ordinary incandescent lamp 4.long life,the lamp usage lasting for more than 8,000hours applications home,dinning room ,office,market and other public places and so on.