Characteristic and function：1、Small granule and even granularity. It is advantageous formerging with other material in the course of using, may reduce the deviation of electronicelement physics parameter greatly.
  2、The purity is high, is advantageous for the operation, favors enhances the good quality rate.
  3、The other element content such as copper, manganese, aluminium, iron are micro, affects to the electronic component performance slightly. It can reduce the error between the actual value and the theoretical value.