国产97人人超碰CAO蜜芽PR_日韩aⅴ无码国产精品_免费毛片a在线观看_国产欧美亚洲精品久91_邻居人妻与教练hd三级_做暧暧视频视频xo_亚洲无码在线精品_丰满少妇高潮掺叫无码_A级毛片大全免费_日韩毛片午夜在线观看

ABOUT US PRODUCTS NEWS CENTER CULTURE CONTACT US 中文版

     Polyvinyl alcohol 

    Polyvinyl alcohol

    Various models Polyvinyl alcohol  Professional sales of Polyvinyl alcohol  Shanwei/Yunwei Polyvinyl alcohol
    Various models Domestic 20kg/bag
    CAS No.: 9002-89-5
    Density: Polyvinyl alcohol relative density (25οC/4οC)1.27~1.31 (solid), 1.02 (10% solution).
    Main use:
      Used in the manufacture of polyvinyl acetal, gasoline resistant pipe, vinylon synthetic fiber, fabric treatment agent, emlsifier, paper coating, adhesive, etc.


    Copyright(C)2019 , Jinan Shijitongda Chemical Co.,Ltd. All Rights Reserved.  Supported by  ChemNet  ChinaChemNet Toocle Copyright Notice