In addition to operating Container Terminal B3 at Laem Chabang Port, ESCO holds major stakes in Container Terminals A0 and B1. Together, these terminals have a capacity of more than 2.2 million TEUs. The company also operates an Inland Container Depot close to Bangkok in Lat Krabang.

In April 2003, PSA invested in ESCO. A joint venture between Japan's Marubeni and Kamigumi and PSA, one of the leading global port groups. PSA participates in port projects across Asia, Europe and the Americas with flagship operations in PSA Singapore Terminals and PSA Antwerp. ESCO operates state-of-the-art facilities with a strong complement of equipment, technology and expertise in the strategic locations of Laem Chabang and Lat Krabang. The company is perfectly positioned to handle Thailand's ever-growing container volume with one-stop services for all container needs.