Sui Northern Gas Pipelines Limited (SNGPL) invites sealed bids from original manufacturers, authorized distributors, dealers, and suppliers registered with Income Tax and Sales Tax Departments. The procurement is for the supply of a Flow Computer as per tender enquiry SN-4769/25. Bidders must provide valid Professional Tax Clearance Certificates and be on the Active Taxpayers list of the Federal Board of Revenue. The tender is foreign/international in nature, and bidders must submit a pay order or demand draft along with proof of active taxpayer status and professional tax certificate for issuance of tender documents.