EU Trademark Classification EU42 Scientific and technological services 数据显示系统的设计和开发（70765） Class 42 数据显示系统的设计和开发 70765 Chinese 数据显示系统的设计和开发 English Design and development of data display systems Site ref. 70765 Class 42 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)