| | Employees:10000+ | Headquarters Location:Houston, US |
| Founded:1879 | Employees:10K - 50K | Headquarters Location:Houston, US |
| Founded:2012 | Employees:10000+ | Headquarters Location:Houston, US |
| Founded:1901 | Employees:10000+ | Headquarters Location:US |
| | Employees:10000+ | Headquarters Location:Houston, US |
| | Employees:10000+ | Headquarters Location:Houston, US |
| | Employees:10000+ | Headquarters Location:Mountain View, us |
| Founded:1953 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| Founded:1983 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| | Employees:10000+ | Headquarters Location:US |
| Founded:1855 | Employees:10000+ | Headquarters Location:US |
| | Employees:10000+ | Headquarters Location:San Antonio, US |
| Founded:2005 | Employees:10000+ | Headquarters Location:Cincinnati, US |
| Founded:2014 | Employees:25 - 100 | Headquarters Location:Lakewood, US |
| Founded:1889 | Employees:10000+ | Headquarters Location:The Woodlands, US |
| | Employees:10000+ | Headquarters Location:US |
| | Employees:10000+ | Headquarters Location:Houston, US |
| | Employees:10000+ | Headquarters Location:US |
| Founded:1938 | Employees:10000+ | Headquarters Location:Houston, US |
| Founded:1974 | Employees:10000+ | Headquarters Location:Warrenville, US |
| Founded:1942 | Employees:100 - 250 | Headquarters Location:ANCHORAGE, US |
| Founded:1968 | Employees:5000-10000 | Headquarters Location:San Antonio, US |
| Founded:1959 | Employees:5.0K - 10K | Headquarters Location:King of Prussia, US |
| Founded:1961 | Employees:5000-10000 | Headquarters Location:Minden, US |
| | Employees:5000-10000 | Headquarters Location:The Woodlands, US |
| Founded:1997 | Employees:5.0K - 10K | Headquarters Location:Houston, US |
| Founded:2017 | Employees:100 - 250 | Headquarters Location:Baton Rouge, US |
| Founded:1975 | Employees:25 - 100 | Headquarters Location:Pasadena, US |
| Founded:1956 | Employees:5000-10000 | Headquarters Location:Manteca, US |
| Founded:1991 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| | Employees:5000-10000 | Headquarters Location:La Porte, US |
| Founded:1889 | Employees:5.0K - 10K | Headquarters Location:The Woodlands, US |
| Founded:1954 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1959 | Employees:1000-5000 | Headquarters Location:The Woodlands, US |
| Founded:1920 | Employees:1.0K - 5.0K | Headquarters Location:Tulsa, US |
| Founded:1909 | Employees:1000-5000 | Headquarters Location:South Portland, US |
| Founded:2014 | Employees:1000-5000 | Headquarters Location:Los Angeles, US |
| Founded:1971 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1936 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| Founded:1954 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| Founded:1989 | Employees:1.0K - 5.0K | Headquarters Location:Oklahoma City, US |
| Founded:1886 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1997 | Employees:1000-5000 | Headquarters Location:Bakersfield, US |
| | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:2005 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| | Employees:5000-10000 | Headquarters Location:Houston, US |
| Founded:1981 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| Founded:2001 | Employees:1000-5000 | Headquarters Location:Brentwood, US |
| Founded:1962 | Employees:500 - 1.0K | Headquarters Location:Alpharetta, US |
| Founded:2007 | Employees:500 - 1.0K | Headquarters Location:Midland, US |
| Founded:1978 | Employees:1.0K - 5.0K | Headquarters Location:Suwanee, US |
| Founded:1981 | Employees:1000-5000 | Headquarters Location:Spring, US |
| Founded:1916 | Employees:1000-5000 | Headquarters Location:Indianapolis, US |
| Founded:1906 | Employees:1000-5000 | Headquarters Location:Sugar Land, US |
| Founded:2012 | Employees:1000-5000 | Headquarters Location:Lakewood, US |
| Founded:1977 | Employees:1000-5000 | Headquarters Location:The Woodlands, US |
| Founded:1983 | Employees:1.0K - 5.0K | Headquarters Location:Houston, US |
| Founded:2001 | Employees:1000-5000 | Headquarters Location:Birmingham, US |
| Founded:1921 | Employees:1.0K - 5.0K | Headquarters Location:Savannah, US |
| | Employees:1000-5000 | Headquarters Location:Dallas, US |
| Founded:1950 | Employees:100 - 250 | Headquarters Location:Houston, US |
| Founded:1934 | Employees:1.0K - 5.0K | Headquarters Location:Pineville, US |
| Founded:1966 | Employees:250 - 500 | Headquarters Location:Mount Vernon, US |
| Founded:2011 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1980 | Employees:1000-5000 | Headquarters Location:La Porte, US |
| Founded:1982 | Employees:1.0K - 5.0K | Headquarters Location:Pasadena, US |
| | Employees:1000-5000 | Headquarters Location:The Woodlands, US |
| | Employees:1000-5000 | Headquarters Location:Gardendale, US |
| Founded:2017 | Employees:1000-5000 | Headquarters Location:Austin, US |
| Founded:1963 | Employees:1000-5000 | Headquarters Location:Beaumont, US |
| Founded:2018 | Employees:1.0K - 5.0K | Headquarters Location:Baytown, US |
| Founded:1946 | Employees:500 - 1.0K | Headquarters Location:Frederick, US |
| Founded:1979 | Employees:1 - 25 | Headquarters Location:Corona, US |
| Founded:1992 | Employees:1000-5000 | Headquarters Location:Allentown, US |
| Founded:1999 | Employees:25 - 100 | Headquarters Location:Theriot, US |
| Founded:2020 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1989 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1948 | Employees:1000-5000 | Headquarters Location:Mcpherson, US |
| Founded:1969 | Employees:1000-5000 | Headquarters Location:Huntington Beach, US |
| Founded:2011 | Employees:1000-5000 | Headquarters Location:Larose, US |
| Founded:2003 | Employees:1000-5000 | Headquarters Location:Tulsa, US |
| Founded:1947 | Employees:1000-5000 | Headquarters Location:Gray, US |
| Founded:1956 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1971 | Employees:500 - 1.0K | Headquarters Location:Irving, US |
| Founded:1964 | Employees:500-1000 | Headquarters Location:Liberty Corner, US |
| Founded:2000 | Employees:1.0K - 5.0K | Headquarters Location:Denver, US |
| Founded:2004 | Employees:1000-5000 | Headquarters Location:Midland, US |
| Founded:1978 | Employees:500 - 1.0K | Headquarters Location:Beaumont, US |
| Founded:1916 | Employees:250 - 500 | Headquarters Location:Chestertown, US |
| Founded:1997 | Employees:250 - 500 | Headquarters Location:Newport Beach, US |
| Founded:1994 | Employees:1000-5000 | Headquarters Location:Pasadena, US |
| Founded:2019 | Employees:5.0K - 10K | Headquarters Location:The Woodlands, US |
| Founded:1962 | Employees:1.0K - 5.0K | Headquarters Location:Daytona Beach, US |
| | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1930 | Employees:5.0K - 10K | Headquarters Location:Houston, US |
| Founded:1996 | Employees:1000-5000 | Headquarters Location:Houston, US |
| Founded:1985 | Employees:500 - 1.0K | Headquarters Location:Anchorage, US |
| Founded:1997 | Employees:500 - 1.0K | Headquarters Location:Houston, US |
| Founded:2001 | Employees:1000-5000 | Headquarters Location:Philadelphia, US |