According to enterprise data, Yongqing PetroChina Kunlun Gas Co., Ltd. was established on February 24, 2003, and its business scope includes natural gas (city gas) sales (operating with qualification certificate); Construction and maintenance of urban natural gas pipelines, gas distribution stations, gas filling stations and supporting facilities; Urban natural gas pipeline transportation, gas pipeline design, technology development and consulting services; Sales of gas cookers and instruments; Development and sales of gas equipment; Self-owned equipment leasing business; Design, sales, testing and maintenance of measuring instruments; Sales, installation and maintenance of boilers and auxiliary equipment; Consulting, service and transfer of new materials, equipment, electronic information technology and products; Retail of metal materials, household appliances, food, kitchen utensils, sanitary ware and daily necessities; Information technology services, human resources outsourcing services. (Except for projects that are prohibited by laws, regulations and the State Council; Projects that are subject to approval according to law can only carry out business activities after approval by relevant departments).