... money 4,No post expansion after cured GNS A22 General Purpose PU Foam1,General Purpose2,Cost Effective3,Value for money4,No ... 750ml)25~30Specific Gravity (Kg/M3)12~18PRODUCT DESCRIPTIONGNS General Purpose PU Foam A22 is a one-component, ready to use ... and water pipes.• Heat preservation, cold and sound insulation.• Packaging purpose, wrap the precious & fragile commodity, shake-proof and anti-pressure ...