中国黄色一级毛片,伊人黄色片一,亚洲最新av一级大片,久久9久,影音先锋三级国产精品电影,日本美女精品视频免费网址大全,老司机在线四虎在线

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.