High-strength interlocking blocks (dock bricks): high strength: compressive strength of 50~ 60MPa; good wear resistance: the fabric is made of high-quality quartz sand, with high strength and good wear resistance; application scope: heavy-duty docks, parking lots, squares, roads, etc. Implement the national standards "Concrete Pavement Brick"(GB28635 -2012) and "Water Transport Engineering Quality Control Standards"(JTS257-2008).