PERIODICAL CLEANING OF PUMP HOUSE NO 5, 6, 8 AND 10 INCLUDING OF ALL TYPES OF TANKS, SUMP AND WELL, REPAIRING OF PUMP / MOTOR ALONGWITH CONNECTED ITEMS, REPAIR TO PS TANK AND VARIOUS TYPE OF VALVE SETS, PUMP MOTORS, REPLACEMENT OF FILTER MEDIA AND AL (投標 №110694848cn)