On September 23, China's first island-circling natural gas pipeline network — the Hainan pipeline network — had transported a cumulative total of over 35 billion cubic meters of gas, providing solid support for the construction of the Hainan Free Trade Port and the clean energy island.

The Hainan island-circling pipeline network has a total length of 899 kilometers and consists of four backbone pipelines: Sanya–Dongfang, Dongfang–Yangpu–Haikou, Haikou–Wenchang, and Wenchang–Qionghai–Sanya. It has 14 process stations and 42 valve chambers, passes through 14 cities and counties including Haikou, Sanya, Danzhou, Dongfang, Wenchang, and Qionghai, and benefits more than 10 million people. It mainly supplies gas to gas-fired power plants, industrial users, and urban gas customers.

As of now, the Hainan island-circling pipeline network has transported a cumulative total of over 35 billion cubic meters of clean natural gas, equivalent to replacing approximately 46.6 million tons of coal, which is equivalent to reducing dust emissions by over 25.4 million tons and carbon dioxide emissions by over 51.2 million tons, injecting strong momentum into the green and low-carbon development of the Hainan Free Trade Port.