久久精品亚洲夜色国产av,欧美日韩大码视频在线观看,亚洲国产精品久久久一区,H无码成人动画在线观看,亚洲日本精品免费在线观看,最近日本字幕mv高清在线,狠狠综合久久AV一区一,91午夜国产在线观看 ,久国产亚洲精品国产福利

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.