The Pakistan Water and Power Development Authority (WAPDA) invites electronic bids from original manufacturers, authorized distributors, suppliers, and contractors registered with Income Tax and Sales Tax Departments. The procurement is for Tools & Plants required for the Mechanical (Aux) Section of the Tarbela 4th Extension Hydel Power Station on D.D.P basis. The contract performance period is 120 days. Bidding documents containing detailed terms, conditions, evaluation criteria, and bid validity are available on the EPADS portal and PPRA website. Bids must be submitted electronically by the specified deadline, and manual bids will not be accepted. A bid security of PKR 29,000/- in the form of CDR is required to be submitted before the closing date.