... must be homogeneous in mixing while casting , unique multi-directional slip resistant tread pattern, low noise and rebounding ... -time molded, durableApplications:1,Molded resin covers, composite materials SMC covers , composite material BMC covers, magnesium covers, resin ... , safety covers, fire wells, gas wells, Power covers, SMC covers, cartoon manhole covers, comic manhole covers2,water grates, ...