Place of Origin : Hangzhou,China
1.Cylinder  Motor Neodymium  Magnet                                  Neodymium magnets are a member of the Rare Earth magnet family and are the most powerful permanent magnets in the world. They are also referred to as NdFeB magnets,Website:http://www.dunbenmagnet.com, or NIB, because they are composed mainly of Neodymium (Nd), Iron (Fe) and Boron (B). 2.Grade  of Neodymium MagnetGradeWorking temperatureN35-N5280°C  (176°F)33M- 48M100°C (212°F)33H-48H120°C  (248°F)30SH-45SH150°C  (302°F)30UH-