EU Trademark Classification EU37 Construction and repair 钻头磨锐（61121） Class 37 Drill bit sharpening 61121 钻头磨锐 Chinese 钻头磨锐 English Drill bit sharpening Spanish afilado de brocas Site ref. 61121 Class 37 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)