The document analyzes the Kuokuang Petrochemical Project from an economic perspective. It finds that the project's estimated annual external costs of NT$56.9-112.1 billion related to greenhouse gases, health risks, agriculture/fisheries, and the environment exceed its benefits of NT$36.5 billion. It also finds that petrochemical industries contribute less than 4% to GDP and have low employment impacts. The document concludes that extending domestic ethylene production through this project is unnecessary if the market is overseas, and that the project should not be implemented given its costs outweigh benefits and it will increase social inequity.