The thread hole of the lifting object is perpendicular to the surface of the object, and the thread specification is matched with the side pulling ring. The bottom of the screw ring of the rotating lifting ring fits closely with the lifting object to prevent the big bending moment caused by the clearance from reducing the service life of the lifting ring. It is forbidden to modify the lifting ring with other accessories such as gasket and spacer between the lifting ring and lifting object. Eye-shaped rings installed in steel, iron and other hard metal surface, prohibit installation in wood, cement and other soft material logistics. Choose the appropriate lifting tools and side-pulling rings collocation, and ensure that the force direction is appropriate. Eye rings are mounted at or symmetrically around the center of gravity. After the eye-shaped rotating ring is installed, when the lifting ring is stressed, neither the lifting ring nor the lifting device can interfere with or hinder the object being lifted.