Description: Resin composite manhole cover & Grating Color: Black, green,grey, yellow,black,red, etc  Shape: Round, square,rectangular, etc Bulk molding compound (BMC) or bulk molding composite is a ready to mold, glass-fiber reinforced thermoset polyester material primarily used in injection moulding and compression moulding. The material is provided in bulk or logs. BMC is manufactured by mixing strands (>1”) of chopped glass …