EU Trademark Classification EU37 Construction and repair 空心墙拉结件安装服务（62688） Class 37 空心墙拉结件安装服务 62688 Chinese 空心墙拉结件安装服务 English Services for the installation of cavity wall ties Site ref. 62688 Class 37 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)