Formaldehyde was reclassified in 2004 by the International Agency for Research
on Cancer (IARC) as ‘‘carcinogenic to humans (Group 1)’’ (IARC 2006), compelling
companies to reduce formaldehyde emission to lower levels. Since 2009, California
Air Resources Board (CARB) imposed more restrictions on formaldehyde emission
limits, which had a great impact on the wood-based panels industry