Professional Service Industries
Oak Brook · Founded 1961
About Professional Service Industries
Professional Service Industries, Inc. (PSI) is an industry-leading engineering, consulting and testing firm.
Company Facts
- Founded: 1961
- Legal name: Professional Service Industries, Inc.
- Operating status: Acquired
- Company type: For Profit
- IPO status: Private
- Employees: 1,001 – 5,000
- Estimated revenue: $100K – $500K
- Website: psiusa.com
- Phone: (630) 691-1587
Social Profiles
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