The liquid distributor evenly distributes the liquid on the surface of the packing to form the initial distribution of the liquid. During the operation of a packed tower, the initial distribution of liquid has the greatest impact on the performance of the tower and is the most important internal component. Generally speaking, for difficult to separate systems, high-efficiency packing, large-diameter, and low layer packing towers require relatively high liquid uniformity. Therefore, sufficient attention should be paid to design, manufacturing, and installation.