国产无遮挡又黄又爽对白视频,久久久免费高清视频,日本黄网站免费,日韩三级在线观看视频,亚洲啊v在线观看,天堂av最新在线,免费看黄色片的网站

CN
CN
  • 潤強絲?-VI Polyacrylonitrile Fiber
    潤強絲?-VI Polyacrylonitrile Fiber Download

    1565848076396889qH9L.jpg

    RQS ? -Ⅵ is comprised of short, thin fibers, predominantly comprised of Polyacrylonitrile (PAN), with a non-circular section shape made by wet spinning for fiber-reinforced high-performance concrete and mortar. The fiber possesses excellent dispersion in cement-based materials with an effective bonding property between fiber and the matrix due to the surface treatment of hydrophilic modification. RQS ? -Ⅵ can decrease and impede the plastic and drying shrinkage of cement-based materials. It can also significantly improve the crack-resistance, impermeability, impact and fire resistance of cement-based materials.