亚洲欧美日韩在线中字幕-一区二区免费看-91av 视频在线观看-八戒影视大全免费高清版-啊轻点灬太粗嗯太深了-2019国产品在线视频-色与欲影视天天看综合网-免费看男女做爰爽爽视频-国产精品一区2区三区内射

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.