Procurement Process This section will provide you with information on the end-to-end TNEC procurement process. Click on any of the following links to get started. Tender & Quotation Learn the process of sale, submission, rejection, and withdrawal of TNEC tender or quotation. Product Delivery Overview of product delivery responsibility, cost, and delivery order. Payment Find out more on supplier payment, terms and process. Vendor Evaluation Assessment of vendor and its criteria upon completion of service/work delivery.