日韩精品一区二三区中文-japanxxxav-天天看片夜夜爽-黄版草莓视频-扒开她的乳罩狂摸她的胸亲吻-91佛爷36分钟八次高潮-久久精精品-男女下面一进一出的视频-国产一区二区三区视频观看

CN
CN
    • 潤(rùn)強(qiáng)絲?-S1 Indented Steel Fiber
    潤(rùn)強(qiáng)絲?-S1 Indented Steel Fiber Download

    1565848028710106bT3V.jpg

    RQS ? -S1 Indented Steel Fiber is comprised of cold rolled steel strip created through striping and cutting. RQS ? -S1 can effectively decrease micro-crack propagation as a result of plastic shrinkage, drying shrinkage and concrete thermal stress, and delay macro-crack formation and propagation. RQS ? -S1 significantly improves the crack resistance, tensile resistance, abrasion resistance and fatigue resistance of concrete.