Hand Warmer

Magic Instant Disposable Self-heating Hand Warmer Product Introduce  Hand warmers can be recharged by immersing the hand-warmer in very hot water until the contents are uniform and then allowing it to cool. The release of heat is triggered by flexing a small metal disk in the hand warmer, which generates nucleation centers that initiate crystallisation. Heat is required to dissolve the salt in its own water of crystallisation and it is this heat that is released when crystallisation is initiated. 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