English to Russian Other Engineering (general) Demonstration capabilities

Имеется опрос на тему качества поломоечных машин. Интересует "demonstration capabilities". Думала об эксплуатационных характеристиках, но есть пункт "Floorcare machine cleaning performance"

Overall value for money (total cost in use, including servicing)
Range of service solutions
Demonstration capabilities
On time delivery in full
Floorcare machine cleaning performance
Floorcare machine durability
Battery performance
Machine servicing costs
Speed of maintenance and repair services
Efficiency of maintenance and repair services
Availability of spare parts
Cost of spare parts