... SGS,ROHS,ISO9001 China Magnets mainly comprised of neodymium ,iron and boron,is the third generation of the rare-earth permanent ... much higher than 1.67 the consisitency of surface magnetic field and magnetic flux can be controlled with +/-1%4)High Anti ... ,acousics,communication equipment,toy,car,servomotor,step motor,DC motor and linear motor,mircrophones Pros: Very strong hold when contacting another ...