japan mitsubishi ptmg1000 polytetrahydrofuran ether ptmeg1000 molecular weight 25190-06-1
<p style="margin-left:0.0000pt; margin-right:0.0000pt" molecular formula ：ho (ch2)4—[—o•(ch2)4—]n-1—oh features ： can be used as the main raw material of polyurethane resin physical prope…
