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 Singapore's PSA, the integrated container terminal operator that manages 28 ports in 16 countries, 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.