国产五级黄色片,亚洲国产精品久久久久婷爱影,精品在线91,粉嫩av一区二区国产精品,激情欧美日韩一区二区,午夜免费啪,国产一区二区三区免费

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.