Purchase of technical services to ensure stable and uninterrupted operation of IT and auxiliary equipment Technical Service/Support/Preventive Repairs for physical security system (Technical Service/Support/Preventive Service) for BDM No. 1 Technical Service/Support/Preventive Service - Technical Service/Support/Preventive Service for BDM background and announcement system No. 1 Technical Service/Support/Preventive Service for BDM Printing infrastructure system No. 1 Technical Service/Support/Preventive Service - BDM No. 2