·Child type(lovely external appearance, vivid music, can improve children’s interest to brush tooth, and help to form the habit of loving brushing tooth)

　　·Adult type(α wave brain-care toothbrush (adult), suitable for all the adults, sweet greeting and warm benediction are great spiritual care to people, easy and pleasant music can waken α wave, relax spiritual pressure and bad mood caused by working pressure rapidly, especially good for the old and slight mental wound persons, for it can relax mood alteration because of age increasing and spiritual frustration, increase their leaning and working capability, improve self-confidence. Nanometer technique makes toothbrush with auto-antisepsis function, avoid twice pollution, can clean oral cavity indeed. Benefit to intelligence and strengthen brain if used for a long time. )

　　·Researchers have already found nanometer toothbrush, which can clear surface of tiny object. This kinds of brush is composed by numerous of extremely tiny carbon canaliculus, it can paint inner part of capillary that is thinner than human hair.