磁头用软磁合金1J85C 1J87C
磁头用软磁合金1J87C 1..
磁头用软磁合金1J85C 1..
磁头用软磁合金1J77C 1..
磁头用软磁合金1J75 1J..
高磁导合金1J88 1J89..