... 5. Light weight but durable. PRODUCT DATA Raw Materials:MgO, MgCl, Perlite, Fiberglass, non-woven fabrics. ... is one of the only negative CO2 building materials in the world, which offers superior performance in ... like hard cement plastering but is fireproof and resistant to damage from water, humidity, freezing, organisms ... fabricated Shelter-Internal/External walls Fire resistant Magnesium Oxide Board