Hydraulic bollard is divided into three types: fixed, automatic and semi-automatic bollard. It has load-bearing and anti-collision rigid steel beams. It has anti-collision and anti-destructive functions. One English control box can control 8 hydraulic lifting columns at the same time. This product can be used in schools, research centers, libraries, parks, scenic spots, pedestrian streets, municipal squares, playgrounds, bus stations, railway stations, subway stations, airports, hospitals, banks, hotels, clubs, commercial buildings, large office buildings , public inspection units, etc.