Material:high quality mineral cotton,.compound fiber,Nm antimicrobial,desiccant,moistureproof dope,ethylene coating,perlite Advantages of Mineral Fiber ... Free 2)Compound Fiber:Organic and Inorganic Fiber 3)Additive:Nm Antimicrobial,Desiccant,Assistant Desiccant ,Rare Earth Inorganic Compound Material,Perlite,Adhesive 4)Surface ...