Metlen Energy & Metals. is a Greek-based industrial conglomerate whose business units are active in the sectors of metallurgy, energy and EPC. The company, which was founded in 1990 as a metallurgical company of international trade and participations, is an evolution of an old metallurgical family business which began its activity in 1908. As of 2024, the company has plans to enter the London Stock Exchange, simply known as LSE.