Established in 2000, ECO Environmental Investments Limited (ECO) is a wholly-owned subsidiary of the Hong Kong and China Gas Company Limited (Towngas). Committed to protecting the environment, ECO has not only developed a wide range of environmentally-friendly energy businesses but also has dedicated itself to driving innovation in related technologies.

In view of the surge in global energy demand, challenges arising from climate change, and changes in China's national energy policy and energy mix, ECO is focusing on the development of new energy and carbon recycling projects in China including clean coal-based green chemicals, logistic hub and novel carbon materials. ECO also operates an onshore oil field project in Thailand.