欧美日韩精选,**色毛片,看免费一级片,日日综合,国产中文字幕乱人伦在线观看,国产精品国产三级国产a,久操久操久操

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.