... 18W, 30W,36W,58W G13 Features:1-use triphosphor fluorescent powder, good lighting effect, small color difference.CRI up to ... are optional for different requirements on color temperature.3-Advanced water-powder coating technique, which increases efficiency of light and reduces ... from black.5-use triplewire filament to ensure sufficient electron powder and prolong service life.6-special tube dia. of ...