First of all, the owner needs to replace the aging tube in time according to the light source parameters provided by the logo, and find that when the two ends of the lamp tube are red, the lamp tube is black or the black shadow, the lamp is not bright, the lamp can be replaced in time to prevent the town from appearing in the town. unsafe phenomenon such as flowers and other unsafe. when cleaning, try not to change the structure of the lamp, and don't casually ...