HDS-L series is a vertical commercial fan， The unique wing-shaped design blades have a diameter of 2.4-3.7m. The wingshaped blades are made by air dynamics principle and advanced technology. The strong air stirring force forms a circulating airflow field, which produces a microwind system similar to nature. People will feel the three-dimensional wind from all directions, increase the area of sweat evaporation, and improve comfort. At the same time, it avoids the use of traditional high-speed fans in the directed wind for a long time, which causes various health problems for the human body, and greatly improves the environmental comfort. The HDS series fans can adjust the air volume according to the actual needs of different occasions. The wind speed can be adjusted freely within the range of 1m-4.5m/s. In an open space, the effective coverage area of a commercial energysaving fan can reach up to 330m²。