... disposable 3.Certificates:CE,SGS,MSDS 4.Supply oem Specifications Mini Hand Warmer For the chilly winter Product Description: 1. Keep warm ... school, primary school students and other fields pepeoleInstant PVC Hand Warmer. a) Bend the metal plate, become crystal instantly To Activate ... boil, until all crystals are dissolved. c) When the hand warmer is completely clear, take it out of the water and ...