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Products & Services
About Donald
Donald is a company based in Pleasant Hill, California, United States, operating in Office service, employing 6-10 people, reporting $0M-$1M in annual revenue and classified under Management, Scientific, and Technical Consulting Services.
Its primary NAICS classification is 541690 (Other Scientific and Technical Consulting Services). Donald is one of 2,121,238 Industrial & mechanical companies listed in California.
Business Contact Information
- Phone
- +1 (925) 9336299
- Website
- donaldmayo.com
- Address
- 150 Grove Cir, Pleasant Hill, California, 94523, United States
Industry & Classification
- Industry
- Industrial & mechanical
- Sector
- Commercial services
- Segment
- Office service
NAICS Codes
- 54Professional, Scientific, and Technical Services
- 5416Management, Scientific, and Technical Consulting Services
- 541690Other Scientific and Technical Consulting Services
SIC Codes
- 7Agricultural Services
- 78Motion Pictures
- 781Motion Picture Production And Allied Services
Company Details
- Employees
- 6 (6-10)
- Annual Revenue
- $663,000 ($0M-$1M)
Donald: frequently asked questions
What does Donald do?
Donald is a company based in Pleasant Hill, California, United States, operating in Office service, employing 6-10 people, reporting $0M-$1M in annual revenue and classified under Management, Scientific, and Technical Consulting Services.
Where is Donald located?
Donald is headquartered at 150 Grove Cir, Pleasant Hill, California, 94523, United States.
How many employees does Donald have?
Donald has about 6 employees (the 6-10 range).
What is Donald's annual revenue?
Donald's annual revenue is estimated at $663,000 (the $0M-$1M range).
What industry is Donald in?
Donald is in the Industrial & mechanical / Commercial services industry, and its primary NAICS code is 541690 (Other Scientific and Technical Consulting Services).
How can I contact Donald?
Its website is donaldmayo.com and its phone number is +1 (925) 9336299.
What companies are similar to Donald?
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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