It seems like you're asking about "national tenders business," possibly referring to government tenders or procurement processes on a national level. Is that what you mean? If so, government tenders involve the process by which government organizations invite bids for large projects, purchases of goods, or services. These bids are usually open to various companies or contractors, and the winning bid typically goes to the organization that offers the best value proposition, considering factors like cost, quality, and delivery time.