ENN Energy Holdings Limited operates as an investment holding company with significant involvement in China's energy sector. Its primary activities include the development, construction, ongoing operation, and management of essential gas pipeline infrastructure, as well as delivering integrated energy solutions and overseeing vehicle and ship refueling stations throughout the People's Republic of China. The company's business model is organized into five main divisions: the retail distribution of gas, integrated energy services, wholesale gas supply, construction and installation projects, and value-added offerings. Its product and service portfolio encompasses the sale and distribution of piped gas, liquefied natural gas (LNG), and a range of other multi-energy products, along with related energy supply services. Additionally, ENN Energy participates in energy trading; the retail of gas pipelines and associated equipment; the transportation of oil and gas; and the sourcing and distribution of LNG. It also engages in the wholesale and retail of LNG, compressed natural gas (CNG), gas equipment, appliances, and various other products, in addition to offering financial services. By the end of 2021, the company's extensive customer base included around 25 million residential consumers and 200,000 commercial and industrial clients. Founded in 1992 and headquartered in Langfang, China, the company was formerly known as XinAo Gas Holdings Limited until it rebranded to ENN Energy Holdings Limited in September 2010.