EU Trademark Classification EU01 Chemicals Unprocessed polybenzimidazol resins Class 01 Unprocessed polybenzimidazol resins 5283 未加工的聚苯并咪唑树脂 Chinese 未加工的聚苯并咪唑树脂 English Unprocessed polybenzimidazol resins Site ref. 5283 Class 01 Included in Harmonised Database (HDB)