037 — Class 37 includes mainly services rendered by contractors or subcontractors in the construction or making of permanent buildings, as well as services rendered by persons or organizations engaged in the restoration of objects to their original condition or in their preservation without altering their physical or chemical properties.

043 — Class 43 includes mainly services provided by persons or establishments whose aim is to prepare food and drink for consumption and services provided to obtain bed and board in hotels, boarding houses or other establishments providing temporary accommodation.