Changge City Xinyu mine engineering plant, the invention developed by stem-iron magnetic separator - stem-election, the local sub-primaries, Featured, sweeping the three major election campaigns.

• 长葛市新宇矿山工程设备厂，发明研制的干式铁粉磁选机-干选机，本机分初选、精选、扫选三大系列。