... surface drainage for car wash room surface:gritted,concave,flat,covered UV reisistant,fire retardant ISO 1)Name:high strength grating ... surface drainage for car wash room 2)Material:fiberglass&resin& ... 1.5")5)Advantage:UV resistant,Fire Retardant,Impact Resistant,High Strength,Non-Magnetic,Non-Conductive,Non-sparking,Light weight, ...