Energy Saving Lamps Technical Terms - Models

You can generally see 2u series, 3U series and other energy-saving lamps on supermarkets. What does this mean? Everyone knows that the lamp of an energy-saving lamp is U-shaped, 2 lamps are 2U, and 3 lamps are 3U. There are no major differences between other lamp tubes of different shapes. The main difference is the power level. Generally, the larger the wattage, the longer the length, the thicker the lamp and plastic.