一、出口效益发展历程我们这里所讲的钢铁出口效益,主要是指钢铁出口所创造的经济效益,因此需要对钢铁对外贸易额的变化进行分析。这里选取钢铁产品中最具代表性的钢材作为研究对象,根据其进出口的格局变化,可以分析出我国钢铁产品进出口经历的几个步骤:假设Q1为我国出口钢材的 First, the export efficiency of the development process Here we talk about the benefits of steel exports, mainly refers to the economic benefits created by the export of steel, so the need for changes in foreign trade in steel analysis. Here we take the steel products as the most representative steel as the research object, according to the pattern of its import and export changes, we can analyze the process of import and export of China’s steel products several steps: Suppose Q1 exports of steel for our country