What are the impacts of the new technological revolution on traditional heavy industries, such as the coal and steel industries in Ruhr, Germany?

As far as the whole industry is concerned, the impact of new technology faced by iron and steel enterprises is mainly: the impact of the performance transcendence of other new materials and the reduction of manufacturing costs on the performance and application scope of iron and steel materials; The irreconcilable contradiction between increasingly strict environmental protection requirements and steel production process emissions; The exhaustion of raw materials, especially the centralized control of coking coal resources, the high monopoly of iron ore resources and the cost pressure of steel industry; The withdrawal of urban iron and steel enterprises from cities and the influence of investment pressure; The research and development of new technology in iron and steel production does not match with functional production; Wait a minute.