Marsh Testing Inc
Commercial services · La Mesa, California
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Products & Services
About Marsh Testing Inc
Marsh Testing Inc is listed as a company operating in Office service, employing 21-50 people, reporting $1M-$5M in annual revenue, classified under Architectural, Engineering, and Related Services and based in La Mesa, California, United States.
Its primary NAICS classification is 541380 (Testing Laboratories and Services). Marsh Testing Inc is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Address
- 5141 Guild St, La Mesa, California, 91942, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5413Architectural, Engineering, and Related Services
- 541380Testing Laboratories and Services
SIC Codes
- 87Engineering, Accounting, Research, Management, And Related Services
- 873Research, Development, And Testing Services
- 8734Testing Laboratories
Company Details
- Employees
- 33 (21-50)
- Annual Revenue
- $1.6M ($1M-$5M)
Marsh Testing Inc: frequently asked questions
What does Marsh Testing Inc do?
Marsh Testing Inc is listed as a company operating in Office service, employing 21-50 people, reporting $1M-$5M in annual revenue, classified under Architectural, Engineering, and Related Services and based in La Mesa, California, United States.
Where is Marsh Testing Inc located?
Marsh Testing Inc is headquartered at 5141 Guild St, La Mesa, California, 91942, United States.
How many employees does Marsh Testing Inc have?
Marsh Testing Inc has about 33 employees (the 21-50 range).
What is Marsh Testing Inc's annual revenue?
Marsh Testing Inc's annual revenue is estimated at $1.6M (the $1M-$5M range).
What industry is Marsh Testing Inc in?
Marsh Testing Inc is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541380 (Testing Laboratories and Services).
What companies are similar to Marsh Testing Inc?
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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