根据乙烯改扩建工程投产近两年来的生产情况对乙烯改扩建工程的检验结果,可以认为项目前期工作的深度是满足工程建设要求的;项目在投资、工期、质量方面的控制是好的,投产后的经济效益是好的。 According to the results of the ethylene modification and expansion projects put into production in the past two years on the ethylene modification and expansion project, it can be considered that the depth of the project’s preparatory work is to meet the requirements of the project construction; the project is well controlled in investment, construction period, and quality, and put into production. After the economic benefits are good.