1. Connection sealing structure: Its structure utilizes the plasticity (memory) of the pipe to achieve a tight seal, and can be used for most plastic pipe connections. 2. Wide range of applications: Sliding tight pipe fittings have strong applicability and wide range of applications. The sliding-tight structure has been successfully applied to aluminum-plastic composite pipes, and its application scope continues to expand. Sliding-tight pipe fittings can work in an environment of 95 degrees Celsius for a long time, with a working pressure of 20 bar, and can meet application environments such as radiator heating, floor heating, and household sanitary water supply. Sliding-type pipe fittings have a compact structure and are suitable for surface and concealed installation, greatly increasing the scope of application of pipe fittings. 3. Long service life: Sliding-type pipe fittings are economical pipe fittings that are maintenance-free and update-free. In household water supply and drainage, domestic hot and cold water applications, it can last as long as the building and does not need to be updated or maintained. Calculated based on the service life cycle, the overall cost of sliding-fitting pipe fittings is the lowest among all pipe fitting products. 4. Flexible installation: The slide-tight pipe fitting design is simple and effective. During the installation process, just push the sliding ferrule in to achieve a safe connection. The annular ribs on the pipe body can not only function as a safety seal, but can also be rotated to adjust the angle of the connected pipes. There is no need for wire welding at the installation site, and the installation time is only half that of wire joints; whether it is in a small pipe well or a water-seeping trench, the connection of sliding-tight pipe fittings is very flexible. 5. Healthy and environmentally friendly: Sliding-tight pipe fittings have a large sealing contact surface between pipes, effectively preventing sewage from outside the pipes from penetrating. Pipe fittings made of environmentally friendly materials are easy to implement, and their hygienic performance reaches European drinking water standards, eliminating problems such as "red water" and "hidden water" in pipelines.