EU Trademark Classification EU01 Chemicals Vinegar (Wood -) Class 01 Vinegar (Wood -) 5322 木醋酸（木醋液） Chinese 木醋酸（木醋液） English Vinegar (Wood -) [pyroligneous acid] Site ref. 5322 Class 01 Included in Harmonised Database (HDB) Name qualifier pyroligneous acid