QR slab anchorage system realize the super long spans in bulidng construcion with more thin beam and floor, which can save cost. The composition of QR Bonded Slab Anchorage system:The anchorage system of 3 holes, 4holes, 5holes specifications could be worked with the size of 12.7mm. 13.2mm,15.24mm and 15.7mm pre-stressed concrete strand, which including anchor head, wedges, pc strand, anchor ...