Top 100 Contractors in PSC H1: Quality Control Services, Aug 2025–Jul 2026
Parent companies by net contract obligations Aug 1, 2025 – Jul 31, 2026 Code page on GovTribe
The latest 12 months. See the newest fiscal year's list: Top Contractors in PSC H1: Quality Control Services, FY2025.
The top 10 won 66% of PSC H1 contract dollars from August 2025 through July 2026
Ranking facts
- Contract obligations
- $294,129,758 Net of deobligations, by contracts coded PSC H1 or a code under it
- Contractors
- 505 Parent companies with an obligation
- Largest contractor
- GDC Middle East Company $167 million, 42.6% of obligations
- Data as of
Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV · Free to reuse with credit to GovTribe (CC BY 4.0)
Full ranking
| Rank | Contractor | Net obligations | Share | Trend |
|---|---|---|---|---|
| 1 |
GDC Middle East Company
Top agencies
|
$166,871,220 | ||
| 2 |
Peckham Vocational Industries Inc.
Top agencies
|
$70,878,966 | ||
| 3 | $4,780,185 | |||
| 4 | $3,444,878 | |||
| 5 | $3,203,439 | |||
| 6 | $2,509,991 | |||
| 7 |
Siemens Industry Inc.
|
$2,150,102 | ||
| 8 |
Phigenics LLC
Top agencies
|
$2,073,090 | ||
| 9 |
GA Mechanical Inc.
Top agencies
|
$2,005,829 | ||
| 10 |
United Paradyne Corporation
Top agencies
|
$1,909,233 | ||
| 11 | $1,838,250 | |||
| 12 | $1,410,861 | |||
| 13 | $1,366,033 | |||
| 14 | $1,278,192 | |||
| 15 | $1,231,809 | |||
| 16 | $1,223,677 | |||
| 17 |
State of Iowa
Top agencies
|
$1,192,283 | ||
| 18 | $1,158,000 | |||
| 19 | $1,091,194 | |||
| 20 | $1,085,057 | |||
| 21 |
Shabas Solutions LLC
Top agencies
|
$958,434 | ||
| 22 | $957,690 | |||
| 23 | $903,553 | |||
| 24 |
Applied Energy Technology Corp
Top agencies
|
$842,786 | ||
| 25 |
Agati, Inc.
Top agencies
|
$840,580 | ||
| 26 | $818,257 | |||
| 27 | $756,459 | |||
| 28 |
The Impact Group LLC
Top agencies
|
$753,357 | ||
| 29 | $750,592 | |||
| 30 | $746,930 | |||
| 31 |
Venergy Group LLC
Top agencies
|
$724,039 | ||
| 32 | $688,871 | |||
| 33 | $683,295 | |||
| 34 |
Liona Enterprises Inc
Top agencies
|
$676,100 | ||
| 35 | $650,311 | |||
| 36 | $641,745 | |||
| 37 | $599,785 | |||
| 38 |
Calista Corp
Top agencies
|
$587,051 | ||
| 39 | $574,735 | |||
| 40 | $526,070 | |||
| 41 |
City Light & Power FTC LLC
Top agencies
|
$514,890 | ||
| 42 | $494,837 | |||
| 43 | $494,614 | |||
| 44 | $462,063 | |||
| 45 | $458,268 | |||
| 46 | $454,223 | |||
| 47 | $448,256 | |||
| 48 | $446,107 | |||
| 49 |
HGS Engineering Inc.
Top agencies
|
$432,006 | ||
| 50 | $431,101 | |||
| 51 |
Evoqua Water Technologies LLC
Top agencies
|
$428,661 | ||
| 52 |
Hurtvet Subcontracting LLC
|
$422,459 | ||
| 53 | $419,000 | |||
| 54 | $416,409 | |||
| 55 |
Tech62 Inc.
Top agencies
|
$403,586 | ||
| 56 |
Bear Environmental LLC
Top agencies
|
$402,517 | ||
| 57 | $401,141 | |||
| 58 | $389,585 | |||
| 59 | $389,056 | |||
| 60 | $382,360 | |||
| 61 | $378,520 | |||
| 62 |
Cintas Corporation
Top agencies
|
$377,910 | ||
| 63 | $369,537 | |||
| 64 | $361,309 | |||
| 65 |
Intertek USA Inc.
Top agencies
|
$329,117 | ||
| 66 |
BCE Solutions LLC
Top agencies
|
$327,566 | ||
| 67 |
Tyco Fire Products LP
|
$327,038 | ||
| 68 | $323,470 | |||
| 69 | $321,225 | |||
| 70 | $309,498 | |||
| 71 |
A-Bear Consult LLC
Top agencies
|
$299,635 | ||
| 72 | $297,365 | |||
| 73 |
AFG Group Inc.
Top agencies
|
$289,604 | ||
| 74 | $280,000 | |||
| 75 | $277,700 | |||
| 76 |
Web Business Solutions Inc.
Top agencies
|
$277,288 | ||
| 77 | $264,524 | |||
| 78 | $263,609 | |||
| 79 | $263,280 | |||
| 80 |
Winergy LLC
Top agencies
|
$263,030 | ||
| 81 |
Serene Dwelling LLC
Top agencies
|
$260,140 | ||
| 82 |
Contract Decor, Inc.
Top agencies
|
$251,805 | ||
| 83 |
Enviroh20 LLC
Top agencies
|
$250,162 | ||
| 84 |
Cubrc, Inc.
Top agencies
|
$241,735 | ||
| 85 | $240,561 | |||
| 86 | $239,161 | |||
| 87 | $235,324 | |||
| 88 | $233,328 | |||
| 89 |
Klenzoid Inc.
Top agencies
|
$232,875 | ||
| 90 | $222,622 | |||
| 91 |
Transcat, Inc.
Top agencies
|
$222,210 | ||
| 92 |
Varex Imaging Corp
Top agencies
|
$221,885 | ||
| 93 | $216,964 | |||
| 94 | $210,400 | |||
| 95 | $208,216 | |||
| 96 |
Compu Dynamics LLC
Top agencies
|
$206,158 | ||
| 97 |
Lionheart Alliance LLC
Top agencies
|
$204,748 | ||
| 98 |
State of Washington Department of Agriculture
Top agencies
|
$203,733 | ||
| 99 | $201,220 | |||
| 100 |
Electrical Testing Solutions Inc.
Top agencies
|
$199,700 |
Show 75 more
100 of 505 contractors listed here. See the rest on GovTribe.
Rankings for the codes under PSC H1
| Code | Net obligations | Largest contractor |
|---|---|---|
| H199 Quality Control Services: Miscellaneous | $13,829,883 | North Carolina Department of Health & Human Services |
| H146 Quality Control Services: Water Purification and Sewage Treatment Equipment | $10,932,942 | GA Mechanical Inc. |
| H141 Quality Control Services: Refrigeration, Air Conditioning, and Air Circulating Equipment | $4,360,597 | United Paradyne Corporation |
| H166 Quality Control Services: Instruments and Laboratory Equipment | $3,257,292 | Health Systems Sciences, LLC |
| H142 Quality Control Services: Fire Fighting, Rescue, and Safety Equipment; and Environmental Protection Equipment and Materials | $1,153,017 | Lionheart Alliance LLC |
How this ranking works
- Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
- Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $391 million obligated before deobligations, so they never pass 100%.
- Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. An awardee whose own actions mostly name no parent, and that no other company's actions name as their parent, rolls up its SAM.gov registration's chain of parent companies: it counts under the first company there that other companies' actions name as their parent, or under the parent most of a company's own actions name, whichever comes first; with neither, under the highest company in the chain with federal contracts of its own. Joint ventures stay companies of their own. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
- Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
- Rank changes compare with Aug 2024–Jul 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
- Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
- Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.
Quick answers
Who were the top 10 PSC H1 contractors in Aug 2025–Jul 2026?
1. GDC Middle East Company ($167M), 2. Peckham Vocational Industries Inc. ($70.9M), 3. Sierra Nevada Company, LLC ($4.78M), 4. North Carolina Department of Health & Human Services ($3.44M), 5. Vanguard Inspection Services ($3.2M), 6. State of Maryland ($2.51M), 7. Siemens Industry Inc. ($2.15M), 8. Phigenics LLC ($2.07M), 9. GA Mechanical Inc. ($2.01M), 10. United Paradyne Corporation ($1.91M).
On GovTribe
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