... cant seep into. Its made of PU compound and black grain,2. products characteristicsProtect environment: innocuity, no social effects to ... or start running frame even if at the starting point of 100-meter which is most frequently used.Clashing: it has the ... the cost.Color: special high rebounding EPDM and PU grain, gentleness surface color, grain structure surface, which can prevent the glaring beam ...