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 Transfer Prover Machines 23M (03 Nos.) and Prover Machine 102M (01 No.). The tender requires submission of Rs 2,500/- as tender document cost and proof of active taxpayer status. Bidders must submit pay order/demand draft and valid tax certificates. The tender is foreign/international in nature and bids must be submitted in sealed form.