EU Trademark Classification EU42 Scientific and technological services 通信系统软件的维护和更新（71530） Class 42 通信系统软件的维护和更新 71530 Chinese 通信系统软件的维护和更新 English Maintenance and updating of software for communication systems Site ref. 71530 Class 42 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)