Beijing permanent magnetic materials Co. Ltd   

Ring magnet with double circular hole hole of the magnet magnet magnet separator magnet magnetic ring sound magnet door stopper magnet NdFeB magnets: neodymium iron boron magnet performance is found in the commercialization of the highest, known as the king has a high magnetic, magnetic to the maximum energy product (BHmax) is higher than the ferrite (Ferrite) 10 times. Mechanical properties of its own is also very good. The work of the highest temperature can reach 200 degrees celsius. But its hard texture, stable performance, has the very good price, so its application is extremely wide. But because of its chemical activity is very strong, so it must be on the surface coating treatment.