Nanjing United Magnet Technology Co, Ltd is a Hi-tech Corporation, specialized in producing and selling middle and high grade magnets, be commissioned to sell office printer material. It is specially engaged in bonded and sintered ferrite magnet, like ring magnet. magnetic core and all kinds of magnet shapes; sintered ferrite magnet have arc magnet. block magnet .ring magnet and so on ;Printing material have magnetic roller. Toner cartridge. Toner. Ink cartridge and so on.