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Investment management in the petroleum industry; Import and export of goods, technology, and agency import and export; Selling fuel oil; Natural gas supply; Selling hazardous chemicals (subject to the scope of the hazardous chemical business license). (Market entities shall independently choose their business projects and carry out business activities in accordance with the law; for projects that require approval by law, they shall carry out business activities in accordance with the approved content after approval by relevant departments; they shall not engage in business activities prohibited or restricted by national and local industrial policies.)show moreInvestment management in the petroleum industry; Import and export of goods, technology, and agency import and export; Selling fuel oil; Natural gas supply; Selling hazardous chemicals (subject to the scope of the hazardous chemical business license). (Market entities shall independently choose their business projects and carry out business activities in accordance with the law; for projects that require approval by law, they shall carry out business activities in accordance with the approved content after approval by relevant departments; they shall not engage in business activities prohibited or restricted by national and local industrial policies.)