EU Trademark Classification EU07 Machinery 储罐用柱塞式阀（16821） Class 07 Plunger type valves for use with tanks 16821 储罐用柱塞式阀 Chinese 储罐用柱塞式阀 English Plunger type valves for use with tanks Site ref. 16821 Class 07 Included in Harmonised Database (HDB)