成全视频在线观看免费看下载,免费网站18禁真人床震无遮挡,亚洲爆乳成人无码aaa片漫画,亚洲国产日韩一区二区A片

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.