Qingdao HuaNuo Maxwarm Commodity Co., Ltd. is a professional body warmer manufacturer. The body warmer adopts the iron "oxidation exothermic" principle, uses the microporous oxygen permeable technology, and adopts a packaging method that completely isolates the air, so that the product has balanced heat dissipation, long-lasting heat, self-heating after opening, non-toxic and harmless, light and compact, and sticky features of ease. It is an eco-friendly product of the new era in a complete sense.