9-page version, the query has similar information, but the content is not repeated! I. Oil shortage? II. Biodiesel? III. Application of biodiesel in countries around the world? IV. Technical problems and solutions? 5. Economic benefits, development prospects and China's development. Mode?? VI. Development trend of biodiesel industry? VII. Research results of biodiesel laboratory of University of Petroleum? VIII. Contribution of biodiesel to China's oil safety, national economic development, agricultural industrial structure adjustment and wartime oil supply? IX. The role and impact of biodiesel on the environment?? 10. Policy recommendations? XI.
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