div class=trans-pagebuttonPage 1button div class=trans-image amp-img class=trans-thumb alt=Page 1: · 2013-06-25 · Gypsum is the ideal surface for a wall because it has the same PH value and thermal conductivity properties as the human skin Gypsum is made UP of minerals and src=https:reader034fdocumentsinreader034viewer20220421065e849fb45183582e2d3edfd7html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=trans-pagebuttonPage 2button div class=trans-image amp-img class=trans-thumb alt=Page 2: · 2013-06-25 · Gypsum is the ideal surface for a wall because it has the same PH value and thermal conductivity properties as the human skin Gypsum is made UP of minerals and src=https:reader034fdocumentsinreader034viewer20220421065e849fb45183582e2d3edfd7html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv