ferrite magnet 1.high performance is acceptable 2.fast delivery. 3.quality according to ISO9001:2000,TS16949,RoHS ferrite magnet1.great for DC motor ... etc.2.Grade:Y28,Y29,Y30,Y32,Y33,Y34,Y35,Y36,Y38,Y403.addition:Ca,Sr,Si.Al,rare-earth metal ... packages.c.Any questions pls feel free to contact us. ferrite magnet