... . Products have ROHS license As the third generation of rare earth permanent magnets, permanent neodymium magnt is ... SH,UH,EH)Shape: RingSize: CustomizedCoating: Zinc, Nickel, Silver, Gold-plating, Phosphor, rubber and Spray Epoxy Resin. ... medical apparatus and transmission machine and even in many details of our everyday life. GradeRemanenceCoercive forceIntrinsic coercive forceMaximum energy ...