What are the actual effects of formaldehyde-removing boards?

Adsorption type: Studies have shown that activated carbon's adsorption capacity for formaldehyde is effective in the short term, but its adsorption efficiency drops rapidly after saturation. A test on activated carbon-containing boards showed that its formaldehyde removal rate could reach 30%-50% initially, but the effect weakened significantly after several weeks.

Decomposition type: The formaldehyde decomposition efficiency of photocatalytic boards is limited by light intensity. Under laboratory conditions, formaldehyde-removing boards equipped with UV lamps can reduce formaldehyde concentration by more than 70%, but the effect may only be 20%-30% in ordinary indoor environments.

Low release type: Boards using formaldehyde-free adhesives can reduce formaldehyde release to 0.02-0.04 mg/m³, far below the national standard (E1 grade ≤ 0.124 mg/m³), but this is more of a "reduction" than a "purification."