秋霞电影高清无码,入室粗暴人妻中出,国产精品未成年RAPPER,老鸭窝laoyawo新地址,国产精品教师视频,免费在线看大片无需流量,欧美aⅴ99久久,亚洲欧美另类小m

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.