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.Washington, D.C powder pneumatic conveying equipment rest assured suppliers Zhongyuan Innovation Machinery Washington, D.C regional sales network site make up more Washington, D.C regional knowledge:C. include information technology, telecommunications and biotechnology. Among the economic sources of Washington, D.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.powder pneumatic conveying equipment manufacturer Zhongyuan Innovation Machinery is located in Asia, and the China-EU train runs through the country. Zhongyuan Innovation Machinery has a service team for Washington, D.C powder pneumatic conveying equipment customers, which can provide powder pneumatic conveying equipment cement powder transportation in cement plants solutions with confidence for Washington, D.C powder pneumatic conveying equipment customers!