... . 2..Dedicated to the adsorption of formaldehyde, benzenes, ammonia, radon and other harmful gases and bacterioplankton in the ... absorb of formaldehyde, benzene, xylene, ammonia, radon and other harmful gases indoors. Meanwhile it owns of removing away of mildew smell ... , SINCHEM had got the approval of FDA (Food and Drug Administration). As to chemical properties of silicon, stability, high-security, ...