EU Trademark Classification EU01 Chemicals 用于形成压电元件的陶瓷粉末（1678） Class 01 用于形成压电元件的陶瓷粉末 1678 Chinese 用于形成压电元件的陶瓷粉末 English Ceramic powder for forming piezoelectric elements Site ref. 1678 Class 01 Included in Harmonised Database (HDB)