Multiple companies are set to participate in Posidonia, with some making their debut, including Pollatos and Türk Loydu. These companies, along with others such as PASSER Marine, Eurochem Intl, and Interyards, will showcase various services and solutions, including marine cleaning solutions, cryogenic experience, and repair and technical support services. The event will also feature companies like Piraeus Marine Services and a Greek company presenting compliance-driven solutions.