| Class | Class Name |
|---|---|
| 40 | metal coating [not painting] |
| 40 | metal cutting |
| 40 | metal etching |
| 40 | metal finishing |
| 40 | metal galvanization and chroming services |
| 40 | metal hardening services |
| 40 | metal plating |
| 40 | metal polishing |
| 40 | metal surface finishing |
| 40 | metal tempering |
| 40 | metal treating |
| 40 | milling |
| 40 | millworking |
| 40 | mixing lubricants for others |
| 40 | mixing of printing inks |
| 40 | mold processing |
| 40 | nickel plating |
| 40 | nuclear fuel reprocessing |
| 40 | offset printing |
| 40 | offset printing services |
| 40 | oil and gas refining services |
| 40 | oil and gas treatment services |
| 40 | oil refining |
| 40 | on-line printing of digital images |
| 40 | optical glass grinding |
| 40 | packaging printing services |
| 40 | pad printing services |
| 40 | paint mixing services |
| 40 | paper bleaching |
| 40 | paper finishing |
| 40 | paper treating |
| 40 | pasteurising of food and beverages |
| 40 | pasteurizing of food and beverages |
| 40 | pattern printing |
| 40 | permanent-press treatment of fabrics |
| 40 | petroleum refining |
| 40 | photo album binding |
| 40 | photo printing |
| 40 | photocomposing services |
| 40 | photoengraving |
| 40 | photographic and film processing |
| 40 | photographic development |
| 40 | photographic enlargement |
| 40 | photographic enlarging and printing |
| 40 | photographic enlarging services |
| 40 | photographic film development |
| 40 | photographic film printing |
| 40 | photographic finishing services |
| 40 | photographic greeting cards processing |
| 40 | photographic image processing |
