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The effects of natural compounds on reducing formaldehyde emission from plywood were investigated. Urea, catechin and vanillin were examined as the natural formaldehyde reducers. The microemission cell, with an internal volume of 35ml, the maximum exposed test surface area of 177cm 2 and an air purge flow rate of 50mlmin −1 , was used to measure specific emission rate (SER). In the...