Washington, D.C. is one of the few modern large cities in the world that only focus on the administrative functions of the government. There is no industry in Washington, D.C., and the economic sources are the federal government grants and its agency expenditures, professional industries and commerce, tourism, etc., in addition to tourism, real estate transactions, information services, education, hotels, media and other service industries. The science and technology industries in Washington, D.C. include information technology, telecommunications and biotechnology. Among the economic sources of Washington, D.Detailed Washington, D.C regional common sense North America grain and oil equipment customers trust enterprises Aoyo edible oil equipment Washington, D.C internet publicity site editors have been sorted out:C., the first is the allocation of federal government and the expenditure of its agencies, with a contribution rate of 33.9% to GDP. Professional industries and businesses ranked second, accounting for 24.2% of GDP. grain and oil equipment service provider Aoyo edible oil equipment is located in the Eurasian continental plate, bordering the Pacific Ocean, and shipping is convenient. Aoyo edible oil equipment has a service team for North America grain and oil equipment customers, which can provide reasonable grain and oil equipment rural crop processing solutions for Washington, D.C grain and oil equipment customers!