Product : Technology: Utilizes new sintered ndfeb magnet techniques and equipment such as strip casting, hddr technology Magnetic properties: High coercive force, the max operation temp is up to 200 degree centigrade or 380 curie temperature; Grades: N35-n52, 33m-48m, 33h-48h, 30sh-45sh, 30uh-38uh and 30eh-35eh; Shapes and sizes: Disc, cylinder, block, cube.Ball.Ring and according to customers' request . Coatings: Nickel, zn, black epoxy, black nickel , nickel -cu-nickel, ag, au etc. Motor magnet applications: Widely used in different applications, such as sensors, motors, rotors, wind turbines/wind generators, loudspeakers, magnetic hooks, magnetic holder, filters automobiles and so on. Quality control : Our qc team consists of more than 12 professional people to ensure 100% products high quality . Extremer power warming : These magnets are dangerous ! if your fingers are trapped between two they will cut your skin . Please be note they should only be handled with great care . Transportation : By air, by sea, by dhl, fedex, ems, ups, fedex Standard export carton