最近更新中文字幕第一页 综合国产无码观看 五月天激情网成人 午夜成人经典三级视频

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 (25^οC/4^οC)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.