... size:according to your need Permanent NdFeb Magnet mainly comprised of neodymium ,iron and boron,is the third generation of ... has excellent properties of high remanence,coercivity,and Max.energy product. Permanent NdFeb Magnet grade:N35,N38,N40,N42,N45,N48 ... average low weight loss less than 2 mg/cm2 NdFeb Magnet applications:loudspeakers,motor assemblies,windmill,Home appliance,acousics,communication ...