519 20w spiral products are offered for sale by suppliers on Alibaba.com, of which energy saving & fluorescent accounts for 18%.
A wide variety of 20w spiral options are available to you, such as straight, tube and bulb.You can also choose from fluorescent, cfl and led 20w spiral,as well as from white, blue, and black 20w spiral, and whether 20w spiral is t-tube, e27, or t4.