This ITB refers to the provision and installation of the mobile air quality monitoring stations in Skopje, Kumanovo and Tetovo, Republic of North Macedonia, including training of the beneficiaries, as further described in the document titled Section 2 Schedule of Requirements (included in the Documents section).-------------------------IMPORTANT NOTE: Interested vendors must respond to this tender using the UNOPS eSourcing system, via the UNGM portal. In order to access the full UNOPS tender details, request clarifications on the tender, and submit a vendor response to a tender using the system, vendors need to be registered as a UNOPS vendor at the UNGM portal and be logged into UNGM. For guidance on how to register on UNGM and submit responses to UNOPS tenders in the UNOPS eSourcing system, please refer to the user guide and other resources available at: https://esourcing.unops.org/#/Help/Guides