... fatigue, ensure traffic safetyd: light reduction is easy for the design of smaller lightse: small infrared and ultraviolet spectral outputf ... : without filament, No light shift incident or the suddenly broken issuesg: super energy-saving: save 50% energy ... or 35W or 55W)4.Ballast type---: normal thick , slim , ultra-slim5.Quantity Note: Write your Requirements in your inquiry.