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      Chemical material is an important branch of new material industry, and is the most dynamic and potential field of basic chemical industry. The development of chemical materials industry is breaking through the bottleneck of domestic resources, environmental protection, industrial structure adjustment, stable, rapid and sustainable development of petrochemical industry. 2011, China Power ". In 2011, China's dependence on foreign oil exceeded 55 percent, exceeding 50 percent for three        consecutive years. By 2020, the country's dependence on foreign countries is expected to reach 67 percent. The energy utilization rate of domestic petrochemical industry is 15% lower than that of developed countries, and the unit energy consumption of some products is 20%-30% higher. There are prominent structural contradictions in domestic petrochemical products. More than 65 percent of its total output value consists of primary processed products such as oil and gas extraction, refined petroleum, basic chemical raw materials and fertilizers, which cannot meet the needs of related industries.