high strength grating surface drainage for car wash room surface:gritted,concave,flat,covered UV reisistant,fire ... ISO 1)Name:high strength grating surface drainage for car wash room 2)Material:fiberglass&resin&mixture3)Surface:concave grate, ... Strength,Non-Magnetic,Non-Conductive,Non-sparking,Light weight,Easy to Install,Easy to Maintain high strength grating surface drainage for car wash room