Zhu Zhou Summit New Material Co. Ltd. Was established in 1999. We built up a unit of 50 t/a sintered NdFeB magnets , We mainly produce ring magnets and arc segments . It is one of the earliest manufacturer of ring magnets of Od160XId 100mm . In 2002 , we expanded the production capacity to 300t/a sintered NdFeB magnets , in 2004 , we finished the unit to 500 t/a sintered NdFeb magnets and 30 t/a sintered SmCo magnets .