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TECHNOLOGY OF PRESERVING PRESILING MATTERS
A rubber coat , pillows for air , it is impossible to save in a dry and warm place . In warm weather, the rubber coat should be hung in a cool place , a well- ventilated room , as if also an air cushion, which should be slightly inflated .
If a rubber coat and other rubber products also want to give softness and elasticity, immerse them for 5-30 minutes in an impotent solution of liquid ammonia .