... to your need rare earth product mainly comprised of neodymium ,iron and boron,is the third generation of the rare-earth permanent magnets,Sintered ... date,It has excellent properties of high remanence,coercivity,and Max.energy product. rare earth product grade:N35,N38,N40,N42 ... ,N35AH(Max.operational temperature:up to 230c) rare earth product Outsanding product:1)high performance:N52,N48M,48SH,42UH,38EH ...