In the construction industry, top-of-chain or high-tier refers to the most prestigious and influential players in the market. These are the companies or individuals that are at the top of the hierarchy within the construction sector, often leading major projects and setting the standards for quality and innovation. High-tier companies are typically well-established, well-known, and highly reputable, with a track record of successful projects and satisfied clients.Being considered top-of-chain in construction can provide a company with numerous advantages, including access to the most lucrative and high-profile projects, as well as the ability to command higher fees for their services. High-tier companies are often sought after by clients who are looking for the best in the business, and their reputation can help them win bids and secure contracts