EU Trademark Classification EU06 Metal goods 金属止回瓣（机器部件除外）（12907） Class 06 金属止回瓣（机器部件除外） 12907 Chinese 金属止回瓣（机器部件除外） English Non-return flaps of metal [other than parts of machines] Site ref. 12907 Class 06 Included in Harmonised Database (HDB)