久草视频免费播放,性香港xxxxx免费视频播放,九色婷婷,色蜜桃蜜桃在线影院,国产麻豆精品手机在线观看,日韩欧美在线播放,26uuu另类亚洲欧美日本一

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.