欧美超大胆裸体XX视频

<ruby id="15my5"><option id="15my5"><div id="15my5"></div></option></ruby>
    1. <span id="15my5"><sup id="15my5"><nav id="15my5"></nav></sup></span>

    2. <span id="15my5"><output id="15my5"><b id="15my5"></b></output></span>

      
      
    3. <optgroup id="15my5"></optgroup>

        <strong id="15my5"></strong>

          Welcome to the official website of Changshu Xinhua Chemical Co., Ltd.!

          Changshu Xinhua chemical co., ltd.

          常熟市新華化工有限公司

          Changshu Xinhua chemical co., ltd.

          WeChat Mobile version

          PRODUCTS

          · Have a scientific enterprise management system · Is a high-tech enterprise in Jiangsu Province and Changshu Polymer New Material Industry Base

          Potassium Bifluoride

          Molecular formula: KHF2
          Molecualr weight: 78.10
          Properties: Colorless crystal of tetragonal system; freely soluble in water; acidic in aqueous solution; no loss of hydrogen fluoride in dry air while hydrogen fluoride released by absorbing moisture in moist air.
          Uses: electrolyte in the preparation of fluorine; in manufacture of anhydrous hydrogen fluoride, potassium fluoride; optical glass and etched glass; also used as welding flux of various metal, wood preservative and catalyst of benzene alkylation.
          Content: ≥98%
          Impurities:

          SiO3

          ≤0.2%

          Cl

          ≤0.05%

          SO4

          ≤0.05%

          Fe

          ≤0.005%

          Pb

          ≤0.005%

          Package: 25kg plastic woven bag.
          Gaution at transportation: Inorganic toxicant; specified number of hazardous goods: 83020
          UN No.: 1811 class of risk: 8.3
          【BACK】

          E-mail Login

          I.D.: @csxhchem.com P.W.:

          GO
          TOP

          欧美超大胆裸体XX视频

          <ruby id="15my5"><option id="15my5"><div id="15my5"></div></option></ruby>
          1. <span id="15my5"><sup id="15my5"><nav id="15my5"></nav></sup></span>

          2. <span id="15my5"><output id="15my5"><b id="15my5"></b></output></span>

            
            
          3. <optgroup id="15my5"></optgroup>

              <strong id="15my5"></strong>