EU Trademark Classification EU04 Industrial oils, greases and fuels Materials for use in preserving buildings Class 04 Materials for use in preserving buildings 8773 建筑物保存用材料（油） Chinese 建筑物保存用材料（油） English Materials for use in preserving buildings [oils] Site ref. 8773 Class 04 Included in Harmonised Database (HDB) Name qualifier oils