<th id="wtqfk"><ol id="wtqfk"></ol></th>

    1. <td id="wtqfk"><option id="wtqfk"></option></td>
    2. <li id="wtqfk"><option id="wtqfk"><b id="wtqfk"></b></option></li>
      <table id="wtqfk"><ruby id="wtqfk"></ruby></table>

      <td id="wtqfk"><option id="wtqfk"></option></td>
      Hydrogen selenide
      hgm
      PDF 166047
      Hydrogen selenide (H2Se) is a colorless and odorous poisonous gas.
      Product characteristics
      Hydrogen selenide is flammable, highly toxic and highly irritating.
      Application instructions
      Hydrogen selenide is an important raw material for the production of semiconductor integrated circuits, and can also be used in the manufacture of infrared window materials.
      Application instructions
      久久久久精品国产aV麻豆_亚洲日韩精品第一页一区_无码超级大爆乳在线播放国产_中文无码av动作片

      <th id="wtqfk"><ol id="wtqfk"></ol></th>

      1. <td id="wtqfk"><option id="wtqfk"></option></td>
      2. <li id="wtqfk"><option id="wtqfk"><b id="wtqfk"></b></option></li>
        <table id="wtqfk"><ruby id="wtqfk"></ruby></table>

        <td id="wtqfk"><option id="wtqfk"></option></td>