Preventive And Corrective Maintenance Service For The Deep Freezers Installed In The Margalef And Prevosti Buildings Of The Faculty Of Biology Of The University Of Barcelona (See Annex I Of The Technical Specifications). The Service Includes The Following Services: - Review Of The Equipment, Preventive And Corrective Actions That Includes An Annual Visit To Check The Correct Operation Of The Deep Freezers. - Preventive Review Report. (EXPIRED)