EU Trademark Classification EU01 Chemicals 树洞填充物（林业）（2968） Class 01 Fillers (Tree cavity -) [forestry] 2968 树洞填充物（林业） Chinese 树洞填充物（林业） English Fillers (Tree cavity -) [forestry] Site ref. 2968 Class 01 Included in Harmonised Database (HDB)