Steel and iron smelting; ferrous metal casting; metal cutting machine tool manufacturing; machine tool functional component and accessory manufacturing; mechanical parts and component processing; high-speed rail equipment and accessory manufacturing; railway rolling stock accessory manufacturing; forging and powder metallurgy product manufacturing; steel rolling and processing; CNC machine tool manufacturing; metal structure manufacturing; metal cutting processing services; metal material manufacturing; metal surface treatment and heat treatment processing; quenching processing; new energy prime mover equipment manufacturing; metal forming machine tool manufacturing; fan and blower manufacturing; general equipment manufacturing (excluding special equipment manufacturing); mold manufacturing; mold sales; auto parts and accessory manufacturing; metal waste and scrap processing; metal material sales; high-quality special steel material sales; new metal functional material sales; mechanical equipment sales; metal product sales; CNC machine tool sales; intelligent basic manufacturing equipment sales; wind turbine generator set and parts sales; wind farm related equipment sales; mechanical parts and component sales; metal cutting machine tool sales; production scrap metal recycling; mechanical equipment research and development; metal ship manufacturing; spray coating processing; non-residential real estate leasing; mechanical equipment leasing.