国产五级黄色片,亚洲国产精品久久久久婷爱影,精品在线91,粉嫩av一区二区国产精品,激情欧美日韩一区二区,午夜免费啪,国产一区二区三区免费

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.