Ozone, sterilization, in addition to odor, decomposition of formaldehyde, toluene. Small, portable, enjoy the new "fresh" taste. The strength of deodorant, remove formaldehyde, guard every health. Safe, efficient, easy to carry, ozone all-round sterilization, deodorization, so that the refrigerator to maintain fresh air, effective suction in addition to ripening agent, extend the shelf life.