EU Trademark Classification EU42 Scientific and technological services 综合能源概念的开发（71074） Class 42 综合能源概念的开发 71074 Chinese 综合能源概念的开发 English Developing of integrated energy concepts Site ref. 71074 Class 42 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)