It is therefore appropriate that they are open to competition in the same way as other types of public contracts for the supply of works or services to ensure best value for money.
Felly, mae’n briodol eu bod yn agored i gystadleuaeth yn yr un ffordd â mathau eraill o gontractau cyhoeddus ar gyfer cyflenwi gweithiau neu wasanaethau er mwyn sicrhau gwerth gorau am arian.