KOA Corporation, commonly referred to as KOA, is a multifaceted company with two distinct entities: one in the United States and another in Japan. The U.S.-based KOA, founded in 1987, specializes in civil engineering, traffic engineering, transportation planning, and construction management services for public and private sector clients. It has been acquired by Lochner, a leading provider of planning and engineering services, and operates with a strong focus on safety and community development. In contrast, the Japan-based KOA Corporation, founded in 1940, is a multinational passive electronic components supplier primarily engaged in the manufacture and sale of resistors, integrated circuits (ICs), and composite components for electronic equipment.