Comprehensive maintenance contract for 1st year, Comprehensive maintenance contract for 2nd year, Comprehensive maintenance contract for 3rd year, Supply, of spares and consumable for annual comprehensive, maintenance contract for 1st year Soda Ash, Supply of, spares and consumable for annual comprehensive, maintenance contract for 1st year Sodium Hypo Chloride, Supply of spares and consumable for annual comprehensive, maintenance contract for 1st year PAC, Supply of spares, and consumable for annual comprehensive maintenance, contract for 2nd year Soda Ash, Supply of spares and, consumable for annual comprehensive maintenance, contract for 2nd year Sodium Hypo Chloride, maintenance contract for 2nd year PAC, contract for 3rd year Soda Ash, contract for 3rd year Sodium Hypo Chloride, maintenance contract for 3rd year PAC, contract for 3rd year Gravels and Pebbles 3- 6 mm size, maintenance contract for 3rd year Gravels and Pebbles 6- 12, mm size, Supply of spares and consumable for annual, comprehensive maintenance contract for 3rd year Gravels, and Pebbles 12- 20 mm size, contract for 3rd year 16 or 32 Mesh Size Coarse and Fine, Barakar Sand, comprehensive maintenance contract for 3rd year Treated, Green Sand, comprehensive maintenance contract for 3rd year MnO2, Lumps, comprehensive maintenance contract for 3rd year, Anthracite, comprehensive maintenance contract for 3rd year Katalox, Kight, comprehensive maintenance contract for 3rd year Starke, White Quartz Sand, Supply of spares and consumable for, annual comprehensive maintenance contract for 3rd year, Activated Carbon 1100 IV