Emergy accounting Emergy accountings 2 Environmental impact 2 Animal by-products 1 Animals 1 Bio-refinery 1 Biorefineries 1 Building construction 1 China 1 Competition 1 Down-stream 1 Economic sustainability 1 Ecosystems 1 Electric power generation 1 Electricity generation 1 Environmental management 1 Environmental sustainability 1 Fossil fuels 1 Housing 1 Iron and steel industry 1 Recycling 1 Resource recovery 1 Scrap metal reprocessing 1 Steel application sector 1 Steel application sectors 1 Steel industry chains 1 Steel recycling and reusing 1 Steel scrap 1 Steelmaking 1 Sustainability assessment 1