1·The coating layer is a Telfon coating layer, namely a polytetrafluoroethylene coating layer, the coating layer can reduce frictional force, which leads the cylinder wall to be more wear-resisting.
涂层为特氟龙涂层，即聚四氟乙烯涂层，涂层可以减少摩擦力，使气缸壁更加耐磨。