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how to identify the foam sealant is good or bad.
Oct 21, 2017

how to identify the foam sealant is good or bad.

A, good adhesion

B, after curing cells to be delicate, can not have large holes

C, can not shrink, this will pull the door.

D, large amount of foam

E, polyurethane foam sealant after curing to be flexible, the general quality of the polyurethane foam sealant is not flexible, as long as the force will fall to a drop.


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