Beijing Enterprises Holdings Limited, an investment holding company, engages in the gas, water, environmental, brewery, and other businesses in Mainland China, Germany, and internationally. The company's Gas Operation segment distributes and sells piped natural gas and gas-related equipment; provides natural gas transmission services, as well as repair and maintenance services; surveys and plots underground construction projects; and installs gas pipelines and related equipment. This segment also engages in the development and operation of city gas projects; LNG supply to industrial end users; trading and distribution of CNG and LNG; operation of CNG and LNG refuelling stations for vehicles; and production and sale of oil and gas.