日本乱偷人妻中文字幕在线 ,日本少妇黑毛bbw,亚洲av国产爽歪歪无码,精品国产一区AV天美传媒

To provide you with solutions to meet your needs.
Relying on our core technology, expertise and skills, Qingyan is committed to bringing the greatest value to the market and developing innovative and competitive chemical solutions for customers in a wide range of industries
■ LCP       ■ PSU PES PPSU       ■ PEEK       ■ PPS      

PSU PES PPSU

     Polyether sulfone (PSU PES PPSU): a kind of transparent or translucent amorphous polymer with light amber color, which is one of special engineering plastics. Polyether sulfone is widely used in high-tech fields such as precision machinery, aerospace, automobile, medical equipment, weapon equipment because of its excellent properties such as light weight, high strength, self-lubrication, wear resistance and corrosion resistance.







      






Copyright © 2019  Nanjing Qingyan polymer new material Co., Ltd.   網(wǎng)站備案/許可證號:蘇ICP備2021051467號-1