LM is the abbreviation of "Lumen", which is translated into "lumen" in Chinese. Lumen is the international standard unit for measuring luminous flux (that is, the total amount of light emitted by a light source), representing the total amount of visible light emitted by a light source per unit time.

The types of linear LED lighting are: Straight LED lamps Curved LED lamps Adjustable angle linear LED lamps Waterproof linear LED lamps Embedded linear LED lamps