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The North American Industry Classification System (NAICS) classifies business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. economy. 

The current TRT NAICS Codes are listed below:

• 541511 - Custom Computer Programming Services
• 541512 - Computer Systems Design Services
• 541513 - Computer Facilities Management Services
• 541519 - Other Computer Related Services
• 541611 - Administrative Management and General Management Consulting Services