After a period of time of the lamps use, will precipitate a thick layer of ash in the above, affect our vision, be regularly cleaned are unavoidable. At the end of the cleaning maintenance, should re-install lamps like complete of the original. not to miss or wrong assembling of lamps and lanterns. General lamps and lanterns with dry cloth to wipe, and pay attention to prevent moisture intrusion, if the lamps and lanterns made of non-metallic, can use wet cloth to wipe, lest dirt build-up, interfere with the lighting effect.