欧美一级婬片人妻欧美大片人,91精品国久久久久久无码,国产99久久久国产精品成人免费,揄拍成人国产精品视频,亚洲一级电影,国产精品69毛片高清亚洲,国产精品毛片一区视频播,国产老熟女精品一区熟女Av,国产又爽又黄无码无遮挡在线观看

CN
CN
  • 潤強絲?-S1 Indented Steel Fiber
    潤強絲?-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.