procurement of different chemicals for cooling water treatment and related amc procurement of different chemicals for cooling water treatment and related annual service contract at stg-1 and 2, sgtpp , procurement of different chemicals for cooling water treatment and related annual service contract at stg-1&2, sgtpp , scale inhibitor for cw treatment , corrosion inhibitor for cw treatment , polymalic acid, polymeric dispersant for hardness stabiliser ( pma & ter polymer ) , bio dispersant for cw treatment , non oxidizing biocide for cw treatment , cw chemical treatment job of stg-1 & 2 (as per attached scope of work)