EU Trademark Classification EU37 Construction and repair 发动机由汽油改为柴油（61037） Class 37 Conversion of engines from petrol to diesel 61037 发动机由汽油改为柴油 Chinese 发动机由汽油改为柴油 English Conversion of engines from petrol to diesel Site ref. 61037 Class 37 Included in Harmonised Database (HDB)