Lot 1 - Cte Grozavesti: 1.Ln3 Demineralization Installation, Line 3: Basic Weak Filter Revision And Strong Basic Filter A1; 2.Ln3 Delivery Installation- Revision Na Cationic Filter No. 5; Lot 2 - Cte Bucharest South: Ln3 Demineralization Station - Mixed Bed Filter Review No.4