Customized Heating Pad Adhesive Foot Warmer Pad

customized heating pad adhesive foot warmer pad Product Introduce Air activated hand warmers contain cellulose, iron, water, activated carbon, vermiculite (water reservoir) and salt and produce heat from the exothermic oxidation of iron when exposed to air. They typically emit heat for 1 to 10 hours, although the heat given off rapidly diminishes after 1–2 hours.[1][2] The oxygen molecules in the air react with iron, forming rust. Salt is often added to catalyze the process. 1. OEM: Offer 2. Free sample: offer 3. Size: 5.5x9cm, 6.5x9cm,   or according to your requirement 4. Certificate: CE,FDA,ISO9001,MSDS 5. MOQ:10,000 pads   MOQ for OEM service: 30,000 bags, or 2,000 boxes.  6. Active ingredient: Iron powder, vermiculite, active carbon, water, salt Product Structure     Working theory When heating material contact the oxygen in the air, it begin oxygenation, this process will continually give out heat for 6 to 8 hours. This process will begin only after your breaking the vacuum packing. Product ingredients  Product features The product is made up of 2 parts: heating material, and the non-woven fabrics bag. Heating material is a mixture made up of iron, activated carbon, mineral salt and water. It is inside the non-woven fabrics bag.  When the mixture meets oxygen in the air, it can give out heat.  Product size Benefits Packing Storage Keep