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Products & Services
About Link21
Link21 is listed as a company reporting $1M-$5M in annual revenue, classified under Colleges, Universities, and Professional Schools, based in San Francisco, California, United States, operating in Office service and employing 11-20 people.
Its primary NAICS classification is 611310 (Colleges, Universities, and Professional Schools). Link21 is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Website
- link21program.org
- Address
- 899 Market St, San Francisco, California, 94102, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 61Educational Services
- 6113Colleges, Universities, and Professional Schools
- 611310Colleges, Universities, and Professional Schools
SIC Codes
- 82Educational Services
- 822Colleges, Universities, Professional Schools, And
- 8221Junior Colleges
Company Details
- Employees
- 18 (11-20)
- Annual Revenue
- $1.4M ($1M-$5M)
Link21: frequently asked questions
What does Link21 do?
Link21 is listed as a company reporting $1M-$5M in annual revenue, classified under Colleges, Universities, and Professional Schools, based in San Francisco, California, United States, operating in Office service and employing 11-20 people.
Where is Link21 located?
Link21 is headquartered at 899 Market St, San Francisco, California, 94102, United States.
How many employees does Link21 have?
Link21 has about 18 employees (the 11-20 range).
What is Link21's annual revenue?
Link21's annual revenue is estimated at $1.4M (the $1M-$5M range).
What industry is Link21 in?
Link21 is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 611310 (Colleges, Universities, and Professional Schools).
How can I contact Link21?
Its website is link21program.org.
What companies are similar to Link21?
Other large industrial & mechanical companies in California include State of California, TD SYNNEX Corp, University of California and Ingram Micro Holding Corp.
Largest industrial & mechanical companies in California
Largest companies in California
Largest industrial & mechanical companies
Manufacturing sales in California, 2026
In California, Factur's 2026 study counted 98 manufacturing quotes worth $14.7M and 18 purchase orders over 12 months: 18% of quotes became orders, against 21% nationally. See the California data.
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