EU Trademark Classification EU11 Lighting, heating and air conditioning Gas pipes (Regulating and safety accessories for -) Class 11 Gas pipes (Regulating and safety accessories for -) 29433 燃气管道用调节和安全附件 Chinese 燃气管道用调节和安全附件 English Gas pipes (Regulating and safety accessories for -) Site ref. 29433 Class 11 Included in Harmonised Database (HDB)