Sou Hu Cai Jing·2025-08-23 05:39Group 1 - China National Offshore Oil Corporation (CNOOC) announced the completion of the Dasha Petrochemical Integration Project in Ningbo, Zhejiang, marking a significant addition to China's largest petrochemical industrial base [1][3] - The total investment for the project is 21 billion yuan, with the core production unit being a 3.2 million tons per year catalytic cracking unit, utilizing domestically developed technology for direct cracking of heavy oil [3] - The unit is capable of producing 1.2 million tons of polymer-grade ethylene and propylene annually, making it the largest single unit for direct conversion of heavy oil to polymer-grade olefins in the country [3] Group 2 - After the commissioning of the catalytic cracking unit, the Dasha Petrochemical's olefin production capacity will reach 1.8 million tons per year, establishing it as the largest production base for direct conversion of heavy oil to olefins in China [3]