EU Trademark Classification EU01 Chemicals Tempering substances for welding Class 01 Tempering substances for welding 5130 熔焊用回火物质 Chinese 熔焊用回火物质 English Tempering substances for welding Site ref. 5130 Class 01 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)