http://www.techerosym.com/ CFLs are designed to replace the incandescent lamp and can fit into most existing light fixtures formerly currently used for incandescents.It reduces the need of extra fixtures for cfls. en-us http://www.techerosym.com/ar-why-choose-cfl.phpAs compared to general service incandescent lamps producing the same amount of light, CFLs generally use much less power, having a longer rated life, but with a higher purchase price