Larde neodymium block magnet 1.Shape:block; 2.Size:can be made according to customer's requiriment; 3.Strong anti-demagnetization; 4.Grade:N33,N35,N38,N40,N42,N45,30M,33M,35M,38M,40M,30H,33H,35H,38H,40H, 30SH,33SH,35SH,38SH,28UH,30UH,28EH,30EH. 5.Good stability. 6.Meet the environment standard of ROHS. Mainly made from neodymium, iron and boron and other mental element, it is the most powerful commercialized rare earth permanent magnets available today, with maximum energy product ranging from 8 MGOe to 55 MGOe and good coercive force. Widely used in industrial automation, mine, motor, communication, petroleum, magnet separator, medical treatment, Hifi acoustics, computer, Aviation, testing device, electronics and timekeeper ect.