As a result of a comparative test of moisture sustaining power, moisture-controlled building materials produced by other companies reached an equilibrium of no more moisture absorbance in two days. In contrast, COOL JAPAN continued absorbing moisture until about the 20th day, reaching to over 2.5 times of absorbance volume that of other hygroscopic building materials at equilibrium point.
Suppression of dew condensation by COOL JAPAN border type