EU Trademark Classification EU01 Chemicals Sands for use in metallurgy Class 01 Sands for use in metallurgy 4628 冶金用砂 Chinese 冶金用砂 English Sands for use in metallurgy Site ref. 4628 Class 01 Included in Harmonised Database (HDB), Nice Alphabetical List, WIPO Madrid Goods and Services (MGS)