Slip ring can be used in any electromechanical system that requires unrestrained, intermittent or continuous rotation while transferring power and / or data. A slip ring is also called a rotary electrical joint, collector, commutate or swivel. A slip ring can improve system performance by simplifying operations and eliminating damage prone wires. It has wide variety of application in CCTV，Wind energy，Industrial machinery，Medical equipment , Military，Aerospace & Navigation, packing Machinery, Oil Exploration, Robotics… etc.