Therefore, diatom mud can not only adsorption harmful material such as formaldehyde, still can decomposition.

In order to study the potential of wool fiber on improvement of IAQ, carries on experiment on adsorbing formaldehyde and creating anion.

Not only have the advantages of sending no harmful gases of formaldehyde, benzene, ammonia and TVOC (volatile organic compounds) out, also with the function of absorbing diversified pernicious gases.