According to enterprise data, Qinhuangdao PetroChina Kunlun Gas Co., Ltd. was established on September 22, 2003, and its business scope includes pipeline gas (natural gas) operation; Propylene, propane and butane wholesale (without storage) (the business license for hazardous chemicals is valid until May 2023 17); Sales of liquefied petroleum gas, liquefied natural gas, compressed natural gas, kitchen and bathroom appliances; Gas vehicle refueling (liquefied natural gas, compressed natural gas); Installation and maintenance of electromechanical equipment and pipelines; Construction of urban gas pipeline network and supporting facilities; Management of urban gas pipeline network and CNG filling station and related technical consulting services; Wholesale, retail and maintenance of gas appliances and accessories; Gas equipment leasing; Selling other chemical products that are not listed in the List of Hazardous Chemicals; Providing labor services; Gas supply consulting service; Information technology consulting services; Sales, installation and related services of food, daily necessities, household appliances, special gas equipment, instrumentation, special water treatment equipment and its accessories; Transportation agency services (projects subject to approval according to law can only be operated after approval by relevant departments) * *