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The formaldehyde emission of the plywood bonded by UF resin with different fillers: Resin A1—0% SEP + 100% WF, Resin A2—20% SEP + 80% WF, Resin A3—40% SEP + 60% WF, Resin A4—60% SEP + 40% WF, Resin A5—80% SEP + 20% WF, Resin A6—100% SEP + 0%WF. Error bars represent standard deviations from three replicates.
