EU Trademark Classification EU37 Construction and repair 聋人助听器的维护和修理（61699） Class 37 聋人助听器的维护和修理 61699 Chinese 聋人助听器的维护和修理 English Maintenance and repair of hearing aids for the deaf Site ref. 61699 Class 37 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)