I just wants to clarify whether the terms of 'Fire Retardant' and 'Fire Resistance' refers to the same meaning? If not, then what is the difference between the two terms? Is it all radiant barrier products must certified as Fire Retardant Class '0'? If they are not certified as Fire Retardant Class '0', then they can't be installed for the radiant barrier purpose? What if the installation is in non-fire sensitive area like the open area (food court, paveway, etc.), do the radiant barrier product need to certify as Fire Retardant Class '0'?