产品品种结构的调整是企业降低成本、增加效益的重要途径。在这方面,鞍钢集团公司积累了宝贵的经验。譬如对产品品种实行“红、黄、绿灯制度”,即:单位销售收入小于单位制造成本的品种为红灯产品,停业生产;单位销售收入小于单位完全成本的品种为黄灯产品,限制生产;有营业利润的 The adjustment of product variety structure is an important way for enterprises to reduce costs and increase profits. In this regard, Angang Group Company has accumulated valuable experience. For example, the implementation of the product variety “red, yellow and green light system”, that is: the unit sales revenue is less than the unit manufacturing cost of the product is red, stop production; unit sales less than the unit cost of the product is yellow light, limiting production; A business profit