Tianjin is one of the most significant bases of petroleum and chemical industries in China. The Dagang Petrochemical Industrial Park, established in 2003, is a specialized industrial zone with the main industrial structures including petrochemical industry, fine chemical industry, new chemical materials and bio-pharmaceuticals. The park covers an area of 55 square kilometers. Since its establishment, the park has initially built itself a zone with the support of petrochemical, fine chemical, modern medicine and new chemical materials. 

Moreover, Tianjin has formed a complete industry chain featuring the petrochemical industry including oil exploitation, oil refining, ethylene production, and chemical industry, making the city a national petrochemical industry base and important marine chemical industry center.