精品一区二区三区爽爽爽,精品久久久一区二区三区,日本一区二区三区免费乱视频,久热国产精品视频一区二区三区,人妻系列无码专区久久五月天 ,红猫大本营,国产91传媒一区二区三区,日本无码精品久久一区二区,天天操这里有精品,国产女人高潮抽搐喷水视频

CN
CN
    • 潤強絲?-S2 End-hooked Steel Fiber (Dispersed, Glued)
    潤強絲?-S2 End-hooked Steel Fiber (Dispersed, Glued) Download

    15658479867185470sqQ.jpg

    RQS ? -S2 is cold-drawn steel-wire fiber that has hooked ends. In comparison to ordinary steel fiber, RQS ? -S2-reinforced concrete possesses more ductility and has a high load-bearing capacity. RQS ? -S2 can reduce micro-crack expansion due to plastic shrinkage, drying shrinkage and thermal cracking, and obstruct macro-crack formation and propagation.