EU Trademark Classification EU17 Rubber and plastics goods 绝缘用吸音砖（37053） Class 17 绝缘用吸音砖 37053 Chinese 绝缘用吸音砖 English Acoustic tiles for insulation Site ref. 37053 Class 17 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)