... human body, and keep the range of temperature at 6-7°C all the time, which makes the most ... based on the same weight. constant temperature lasts for 6-8 hours at 35°C.At 27°C,crystallized ... tape it.2, In case of cold for the old ,baby and valetudinarian, cotton cloth is needed to put on ... 4 if it cannot crystallize because of the high temperature.6,When using as a laptop pad, the re-crystallized ...