... 2.Very stable. 3.Strong resistance to demagnetization Sintered ndfeb magnet*********************************** Products performance:Grade: N35-N52,30H-48H,30SH-45SH, ... : Block, Tile, Disc, Ring, Segment, Cylinder, etc.*********************************** Products detailed: GradeBr mT(KG)bHc KA/m(KOe)lHc KA ... , loud speakers, linear actuators, household appliances, toys, bags.... sintered ndfeb magnet