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...Procurement methods procedures hgpl version general guidelines and table of contents preamble purpose this guideline who should use how be used the trinidad tobago public does link to introduction determining most appropriate method bidding based request for proposal other procuring rfp using a probity advisor or auditor what is why it important vs when required open conditions notice regional international limited ii requests quotations rfq an proposals rfps without negotiation two stage with dialogue consecutive negotiations competitive are single source iii...