The seat plate device is a device for carrying workers. The safety rope is woven with synthetic fibers and is an auxiliary rope used to connect the safety belt. Its function is double protection. Parallel safety rope, a safety rope used for horizontal moving operations on steel frames. Small elongation and high sliding rate are required. Steel wire rope injection molding is generally used to facilitate the safety hook to move easily on the rope. It is widely used in the installation of steel frames in thermal power generation projects and the installation and maintenance of steel structure projects.