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Skokie, Illinois
Corporate Office | Laboratories
5400 Old Orchard Road
Skokie, Illinois 60077
Phone: 847-965-7500
Toll-Free: 800-522-2285
Fax: 847-965-6541
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Austin, Texas

3737 Executive Center Drive, Suite 255
Austin, Texas 78731
Phone: 512-219-4075
Fax: 512-219-4077
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Bradenton, Florida

305 15th Street West
Bradenton, Florida 34205
Phone: 941-238-1000
Fax: 941-238-1005
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Doha, State of Qatar

PO Box 14212
Street 39, Gate 322
Industrial Area
Doha, State of Qatar
Phone: +974-4037-0130
Fax: 847-965-6541
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Horsham, Pennsylvania

400 Babylon Road, Suite A
Horsham, Pennsylvania 19044
Phone: 267-282-5380
Fax: 267-282-5870
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Naperville, Illinois

40 Shuman Boulevard, Suite 218
Naperville, Illinois 60563
Phone: 630-995-3949
Fax: 630-946-6205
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Washington, D.C.

1150 Connecticut Avenue, NW, Suite 500
Washington, DC 20036
Phone: 847-965-7500
Toll-Free: 800-522-2285
Fax: 847-965-6541
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Engineering services in Michigan, New York, and North Carolina are provided through CTL Engineers & Construction Technology Consultants, P.C.