... -time molded, durableApplications:1,Molded resin covers, composite materials SMC covers , composite material BMC covers, magnesium covers, resin covers, ... fiber covers, resin fiberglass covers , long glass fiber covers, composite covers, Coulee cover, security covers, turf covers, grass basin ... , all kinds of valve wells; ,City water,drainage pipe well, heat supplied, gas well4,Round SMC Manhole Cover ...