EU Trademark Classification EU01 Chemicals Quench compounds for use in metal forming processes Class 01 Quench compounds for use in metal forming processes 4377 用于金属成型工艺的淬火化合物 Chinese 用于金属成型工艺的淬火化合物 English Quench compounds for use in metal forming processes Site ref. 4377 Class 01 Included in Harmonised Database (HDB)