婷婷综合久久一区二区三区,聊斋之鬼狐完整版未删减在线观看,国产精品69av,超碰97人人人人人蜜桃,国产有码,久久6视频,炙热电影未删减完整版磁力

CN
CN
    • SBT?-N(II) Liquid Setting Accelerator（Alkali-free）
    SBT?-N(II) Liquid Setting Accelerator（Alkali-free） Download

    1565847913679772IeN6.jpg

    SBT ? -N(II) is a high performance alkali-free setting accelerator for sprayed concrete. It speeds the chemical reaction between cement and water which causes mortar to set faster and increase the early strength development. SBT ? -N(II) has the properties of well adapted to cement, quick setting, high early strength and low rebound of concrete. It is widely used in many fields such as mining, hydropower, highway, railway tunnel, laneway, cave and so on.