欧美一级视频免费观看,亚洲变态另类调教久久久,黄色小视频网站免费,五月天狠狠操,免费一级大片,另类成人专区,男人的天堂在线视频免费观看

CN
CN
  • SBTHF?-Ⅴ Grouting Material for Post-tensioned Pre-stressed Concrete Structure
    SBTHF?-Ⅴ Grouting Material for Post-tensioned Pre-stressed Concrete Structure Download

    1565655330711944QZNO.jpg

    SBTHF? -V is an amalgamation of cement, low-alkali, high-expansion material and functional polymers.The grout possesses multiple properties with long workable time, no bleeding, and mild expansion. It is suited for the preparation of post-tensioning duct grouts applied in expressway and large bridge projects.