EU Trademark Classification EU01 Chemicals 防结垢用化学品（家用除外）（2363） Class 01 防结垢用化学品（家用除外） 2363 Chinese 防结垢用化学品（家用除外） English Chemicals used to prevent scaling [other than household] Site ref. 2363 Class 01 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)