| http://www.w3.org/ns/prov#value | - The certification must contain: 1. the manufacturer's name; 2. a description of the type of insulating material being certified in sufficient detail to permit its identification, such as information sheets, brochures, a sample product label, or similar information; 3. a statement that the insulating material is not a UFFI material; and 4. verification that the insulating material either (a) has un
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