Notice Of An Open Request For Proposals For The Modernization Of Uninterruptible Power Supply (Ups) Systems With A Power Of Up To 10 Kva, Replacing The Apc Smart-Ups Vt 10Kva 400V, For The Facility: Moscow, Proektiruemy Proezd 4062, Server Room, In The Interests Of The Group Of Companies Pjsc "Mts" S" (Tendering No. 218292)