EU Trademark Classification EU04 Industrial oils, greases and fuels Preservatives (concrete -) Class 04 Preservatives (concrete -) 8869 混凝土防腐剂（油） Chinese 混凝土防腐剂（油） English Preservatives (concrete -) [oils] Site ref. 8869 Class 04 Included in Harmonised Database (HDB) Name qualifier oils