EU Trademark Classification EU37 Construction and repair 燃气轮机的维护和修理（61721） Class 37 燃气轮机的维护和修理 61721 Chinese 燃气轮机的维护和修理 English Maintenance and repair of gas turbines Site ref. 61721 Class 37 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)