Slip ring, used in multi-function, high performance, high precision, multiple continuous rotary motion of high-end industrial electrical equipment or precision electronic equipment, such as: aerospace equipment, military airborne, engineering machinery, photoelectric pods, radar communication equipment, medical equipment, automatic processing equipment, smelting equipment, mining equipment, cable equipment, amusement equipment, display equipment, intelligent camera, chemical reactor, crystal furnace, wire stranding machine, windmill power generation equipment, robotic arm equipment, robot equipment, shield machine equipment, revolving door, measuring instrument equipment, model airplane, charging pile, industrial automation, offshore equipment, etc. Slip rings provide a reliable energy and signal transmission solution for these electromechanical devices to achieve 360 degree rotational motion.