Sei Information Technology
Commercial services · Oak Brook, Illinois
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Products & Services
About Sei Information Technology
This profile covers Sei Information Technology, a company reporting $1M-$5M in annual revenue, classified under Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology), based in Oak Brook, Illinois, United States, operating in Office service and employing 11-20 people.
Its primary NAICS classification is 541715 (Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)). Sei Information Technology is one of 508,039 Industrial & mechanical companies listed in Illinois.
Business Contact Information
- Phone
- +1 (630) 5714380
- Address
- 1301 W 22nd St, Oak Brook, Illinois, 60523, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5417Scientific Research and Development Services
- 541715Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 873Research, Development, And Testing Services
- 8731
Company Details
- Employees
- 12 (11-20)
- Annual Revenue
- $1.3M ($1M-$5M)
Sei Information Technology: frequently asked questions
What does Sei Information Technology do?
This profile covers Sei Information Technology, a company reporting $1M-$5M in annual revenue, classified under Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology), based in Oak Brook, Illinois, United States, operating in Office service and employing…
Where is Sei Information Technology located?
Sei Information Technology is headquartered at 1301 W 22nd St, Oak Brook, Illinois, 60523, United States.
How many employees does Sei Information Technology have?
Sei Information Technology has about 12 employees (the 11-20 range).
What is Sei Information Technology's annual revenue?
Sei Information Technology's annual revenue is estimated at $1.3M (the $1M-$5M range).
What industry is Sei Information Technology in?
Sei Information Technology is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541715 (Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)).
How can I contact Sei Information Technology?
Its phone number is +1 (630) 5714380.
Largest companies in Illinois
Largest industrial & mechanical companies
Manufacturing sales in Illinois, 2026
In Illinois, Factur's 2026 study counted 74 manufacturing quotes worth $11.8M and 14 purchase orders over 12 months: 19% of quotes became orders, against 21% nationally. See the Illinois data.
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