To distinguish between good and bad magnets is mainly to look at the surface, the surface with or without damage, plating is bad, etc., the magnetic force depends on the performance of the magnet, according to your requirements to do the corresponding performance of the magnet, generally divided into N33,N35,N38, etc. different, the higher the number behind the N, the magnet's magnetic force will be the stronger. Now the magnet's raw material praseodymium price by the national policy control and the international market and many other elements all the way up, so the offer of each family are different, because one to take the material price is not the same, and the cost control of each family is also different.
SHENZHEN HONGCHANGYU MAGNETICS CO., LTD Mr. Chen / Mr. Wu
0755-81789565
Welcome to inquire about the negotiation.