FD-1 soft strip is based on PTFE and mold pressed and sintered into lubricants mainly copper etc. It is of low friction, Low wear. Its tensile strength can meet the motion of piston ring, Due to its low friction, DDB-FD can be applied under oil or without oil and so it's the best choice of auto damper, piston ring. At present, it is adopted lots of China auto, such as Audi, Volkswagen, Cetiron etc and it maintains low friction long-timely.