... 1,below body temperature 6-7C 2,keep cool 8 hours 3,cool effect is obvious within seconds 4, ... on the same weight. constant temperature lasts for 6-8 hours at 35°C.At 27°C,crystallized automatically within ... tools and fireworks. In case of slight damage, use super glue to tape it.2, In case of cold for the ... case of dirty, use towel to wipe or detergent.8,Put in the cool place and avoid direct sunlight.9 ...