hand warmer manufacturer Standar Size: 10x 13 cm CE, ISO, SGS ETC hand warmerIngredients: Iron powder, water, activated carbon, cellulose, salt and catalyst. Non-woven ... hours warmth. TypePictureInner bagOuter bagMax.TemperatureAve.TemperatureHeating durationWeightQuantity/CTNCarton Sizehand warmer 130*100mm165*126mm63521245±5g300pcs/CTN38.5*34*22cmPreserving Way: Store ...