Sintered Neodymium Iron Boron(NdFeB) magnets are made from different kinds of rare earth materials, such as Nd, Dy, Fe, Al, Nb, Ga, Mo, Co and few other metals and they are the third generation rare earth permanent magnets that is the strongest magnets in the world and they feature high remanence, high corrective force and high energy products and they are more than 10 times stronger than ferrite(ceramic) magnets. The ordinary coatings include Nickel(Ni-Cu-Ni), Black nickel, Zinc(Trivalent), Epoxy, Tin, Gold, Silver & Parylene etc. The ordinary grades of NdFeB magnets have N35, N38 to N52, N35M, N28M to N48M, N33H to N46H, N33SH to N44SH, N30UH to N35UH and N30EH to N35EH and their BHmax is 52MGOe that is the highest grade We can make now. Their highest working temperature is 200 °C. They almost can be any size and shape, such as block, disc, ring, segment, cylinder and any special shapes. They have wide applications such as wind generators,DC motors, air conditioners, servo motors, PM motors, linear motors, VCM, medical apparatus, electronic components, toys, hand crafts and other magnetic holding and seperating products.

Neodymium Cylinder magnets can be made from longer cylinder magnets and usually need cutting and milling process in order to get the right part and finally will be coated Nickel(Ni-Cu=Ni), Black Nickel, Zinc(Trivalent), Epoxy, Stannum, Gold, Silver or Parylene etc in order to keep from rusting according to order requirement. And it is also called bar magnets or rod magnets.

This kind of NdFeB bar magnets have many applications in ordinary magnetic assemblies and some electronic components. The highest grades still have N52, N48M, N44H, N42SH, N38UH and N35EH etc. And a serious of strict test such as salt spray test, coating thickness test, temperature and wet test and specification test and surface test etc will be made before shipment and all goods are shipped to customer along with Test report and Curve Chart Report in order to guarantee the right quality of magnets.