Top 100 Contractors in PSC 68: Chemicals and Chemical Products, FY2021

Name: Top 100 Contractors in PSC 68: Chemicals and Chemical Products, FY2021
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2020 – Sep 30, 2021 Code page on GovTribe

The top 10 won 53% of FY2021 PSC 68 contract dollars

Contract obligations: $348,811,787 Net of deobligations, by contracts coded PSC 68 or a code under it
Contractors: 870 Parent companies with an obligation
Largest contractor: Science Applications International Corporation $60.8 million, 15.9% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Science Applications International Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency) USAF (Department of the Air Force)	$60,821,758	15.9%	Rank history: #2 in FY2022, #1 in FY2023, #10 in FY2024 and not on the FY2025 list; unchanged since FY2020.
2	Sicpa Holding SA Through Sicpa Securink Corp Top agencies Treasury (Department of the Treasury)	$60,565,616	15.8%	Rank history: #1 in FY2022, #3 in FY2023, #4 in FY2024 and not on the FY2025 list; unchanged since FY2020.
3	Perimeter Solutions LP 2 awardees Top agencies USDA (Department of Agriculture) DOI (Department of the Interior)	$28,812,841	7.5%	Rank history: #3 in FY2022, #6 in FY2023, #1 in FY2024 and #1 in FY2025; up 14 since FY2020.
4	Hudson Technologies, Inc. 2 awardees Top agencies DLA (Defense Logistics Agency)	$10,090,964	2.6%	Rank history: #4 in FY2022, #4 in FY2023, #5 in FY2024 and #6 in FY2025; up 1 since FY2020.
5	Airgas Inc. 16 awardees, including Airgas Usa, LLC, Air Liquide America L.P. and Air Liquide Sanita\' Service SPA Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) Army (Department of the Army)	$9,137,530	2.4%	Rank history: #7 in FY2022, #31 in FY2023, #98 in FY2024 and not on the FY2025 list; up 3 since FY2020.
6	Drew Marine USA Inc Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$9,110,903	2.4%	Rank history: #6 in FY2022, #5 in FY2023, #9 in FY2024 and #10 in FY2025; up 167 since FY2020.
7	RAS Enterprises LLC Top agencies VA (Department of Veterans Affairs) DOE (Department of Energy) DOJ (Department of Justice)	$8,690,059	2.3%	Rank history: #8 in FY2022, #11 in FY2023, #11 in FY2024 and #11 in FY2025; up 2 since FY2020.
8	Exelon Corporation Through Constellation Newenergy - Gas Division, LLC Top agencies Army (Department of the Army) VA (Department of Veterans Affairs) DOJ (Department of Justice)	$6,062,918	1.6%	Rank history: #56 in FY2022 and not on the FY2023–FY2025 lists; up 17 since FY2020.
9	TC Chemicals, LLC Top agencies DLA (Defense Logistics Agency)	$4,536,237	1.2%	Rank history: #5 in FY2022, #12 in FY2023, #15 in FY2024 and #26 in FY2025; up 9 since FY2020.
10	Amentum Services, Inc. Top agencies Navy (Department of the Navy)	$3,834,197	1.0%	Rank history: #17 in FY2022, #25 in FY2023 and not on the FY2024–FY2025 lists; up 83 since FY2020.
11	Arctic Slope Regional Corporation Through Asrc Federal Facilities Logistics, LLC Top agencies DLA (Defense Logistics Agency)	$3,471,632	0.9%	Rank history: #71 in FY2022, not on the FY2023 list, #3 in FY2024 and #3 in FY2025; down 8 since FY2020.
12	Defense Energy Syndicate, LLC Top agencies DLA (Defense Logistics Agency)	$3,467,679	0.9%	Rank history: #38 in FY2022, #62 in FY2023, #32 in FY2024 and #18 in FY2025; up 9 since FY2020.
13	Danaher Corporation 7 awardees, including Chemtreat, Inc., Beckman Coulter, Inc. and Leica Microsystems Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) WHS (DOD Washington Headquarters Service)	$3,436,452	0.9%	Rank history: #15 in FY2022, #17 in FY2023 and not on the FY2024–FY2025 lists; up 16 since FY2020.
14	Sage Energy Trading LLC Top agencies USAF (Department of the Air Force) DOJ (Department of Justice)	$3,057,795	0.8%	Rank history: #82 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
15	Environmental Applied Technology Corporation Top agencies DHS (Department of Homeland Security)	$2,976,566	0.8%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
16	Matheson TRI-Gas Inc. 4 awardees, including Nippon Sanso Matheson, Inc. and Nippon Sanso Deutschland GMBH Top agencies DLA (Defense Logistics Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$2,834,368	0.7%	Rank history: #13 in FY2022, #40 in FY2023 and not on the FY2024–FY2025 lists; up 18 since FY2020.
17	San Luis Butane Distributors Top agencies Army (Department of the Army) DOI (Department of the Interior) USAF (Department of the Air Force)	$2,639,275	0.7%	Rank history: #16 in FY2022, #13 in FY2023, #26 in FY2024 and #17 in FY2025; down 4 since FY2020.
18	Kuehne Chemical Company, Inc. Top agencies Army (Department of the Army)	$2,348,544	0.6%	Rank history: #21 in FY2022, #35 in FY2023, #27 in FY2024 and #35 in FY2025; up 17 since FY2020.
19	UGI Corporation 4 awardees, including Amerigas Propane, L.P., UGI Energy Services, LLC and UGI Utilities Inc. Top agencies DOI (Department of the Interior) DOJ (Department of Justice) Army (Department of the Army)	$2,276,232	0.6%	Rank history: not on the FY2022–FY2025 lists; up 7 since FY2020.
20	Scentry Biologicals, Inc. Top agencies USDA (Department of Agriculture)	$2,261,539	0.6%	Rank history: #18 in FY2022, #27 in FY2023, #24 in FY2024 and #38 in FY2025; up 3 since FY2020.
21	Centerpoint Energy Services Inc. Through Nextera Energy Services Gas, LLC Top agencies Army (Department of the Army)	$2,179,050	0.6%	Rank history: #11 in FY2022, #34 in FY2023, #33 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
22	Praxair Distribution Inc. 11 awardees, including Linde Gas & Equipment Inc., Linde Gas Espana, S.A. and Linde Hellas Single Person Ltd Top agencies DLA (Defense Logistics Agency) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$2,109,681	0.6%	Rank history: #43 in FY2022, #23 in FY2023, #47 in FY2024 and not on the FY2025 list; unchanged since FY2020.
23	Green Lantern, LLC Top agencies Army (Department of the Army) HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$2,078,547	0.5%	Rank history: #31 in FY2022, #53 in FY2023, #51 in FY2024 and #42 in FY2025; up 19 since FY2020.
24	General Atomic Technologies Corporation Through General Atomics International Services Corp Top agencies USAF (Department of the Air Force)	$2,047,950	0.5%	Rank history: #55 in FY2022, not on the FY2023 list, #69 in FY2024 and not on the FY2025 list; up 75 since FY2020.
25	Exxon Mobil Corp Top agencies Navy (Department of the Navy)	$1,961,399	0.5%	Rank history: not on the FY2022–FY2025 lists; down 11 since FY2020.
26	Inchcape Shipping Services Dubai LLC Top agencies DLA (Defense Logistics Agency)	$1,896,507	0.5%	Rank history: #39 in FY2022, #61 in FY2023, #49 in FY2024 and #60 in FY2025; up 18 since FY2020.
27	DPA Investments Inc. Through Usalco, LLC Top agencies Army (Department of the Army)	$1,881,560	0.5%	Rank history: #19 in FY2022, #32 in FY2023, #58 in FY2024 and not on the FY2025 list; down 3 since FY2020.
28	Flir Systems Inc. Through Teledyne Flir Defense, LLC Top agencies Army (Department of the Army)	$1,877,553	0.5%	Rank history: #73 in FY2022, #19 in FY2023, #39 in FY2024 and not on the FY2025 list; down 12 since FY2020.
29	Global Gases Group FZE Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,865,167	0.5%	Rank history: #65 in FY2022, #74 in FY2023, not on the FY2024 list and #62 in FY2025; up 143 since FY2020.
30	Air Products and Chemicals, Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$1,835,678	0.5%	Rank history: #20 in FY2022, #20 in FY2023, #29 in FY2024 and #25 in FY2025; up 8 since FY2020.
31	Centrica PLC Through NRG Business Marketing LLC Top agencies DHS (Department of Homeland Security) DOJ (Department of Justice) VA (Department of Veterans Affairs)	$1,663,644	0.4%	Rank history: not on the FY2022 list, #28 in FY2023, #21 in FY2024 and not on the FY2025 list; up 59 since FY2020.
32	Merrimac Petroleum, Inc. Top agencies DOI (Department of the Interior) Navy (Department of the Navy) Army (Department of the Army)	$1,407,937	0.4%	Rank history: #37 in FY2022, #24 in FY2023, #59 in FY2024 and not on the FY2025 list; up 47 since FY2020.
33	Resintech Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency)	$1,361,887	0.4%	Rank history: #49 in FY2022, #36 in FY2023, #63 in FY2024 and #75 in FY2025; up 39 since FY2020.
34	UnitedHealth Group Incorporated Through Optum Pharmacy 801, Inc. Top agencies VA (Department of Veterans Affairs)	$1,326,500	0.3%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
35	Toyal America Inc. Top agencies Army (Department of the Army)	$1,308,048	0.3%	Rank history: not on the FY2022–FY2025 lists; down 20 since FY2020.
36	Amerochem Corporation Top agencies Navy (Department of the Navy)	$1,305,922	0.3%	Rank history: #35 in FY2022, #37 in FY2023, #35 in FY2024 and #64 in FY2025; down 5 since FY2020.
37	Enspire Energy, LLC Top agencies DLA (Defense Logistics Agency)	$1,297,539	0.3%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
38	Roberts Oxygen Co Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency) DHS (Department of Homeland Security)	$1,282,666	0.3%	Rank history: #46 in FY2022 and not on the FY2023–FY2025 lists; up 18 since FY2020.
39	Linde LLC 2 awardees, including Messer LLC and Messer Gas Puerto Rico Inc. Top agencies Treasury (Department of the Treasury) DLA (Defense Logistics Agency) DMEA (Defense Microelectronics Activity)	$1,280,949	0.3%	Rank history: #25 in FY2022, #42 in FY2023, #68 in FY2024 and not on the FY2025 list; up 42 since FY2020.
40	Nation Ford Chemical Co Top agencies Army (Department of the Army)	$1,279,850	0.3%	Rank history: not on the FY2022 list, #18 in FY2023, #92 in FY2024 and #24 in FY2025; down 10 since FY2020.
41	Ecolab Inc. 3 awardees, including Championx LLC Top agencies Navy (Department of the Navy) USAF (Department of the Air Force) DOJ (Department of Justice)	$1,270,726	0.3%	Rank history: #26 in FY2022, #29 in FY2023 and not on the FY2024–FY2025 lists; up 27 since FY2020.
42	WGL Energy Services Inc. Top agencies DLA (Defense Logistics Agency)	$1,223,117	0.3%	Rank history: not on the FY2022 list, #41 in FY2023 and not on the FY2024–FY2025 lists; down 2 since FY2020.
43	Suffolk Solutions, Inc. Top agencies Army (Department of the Army)	$1,203,379	0.3%	Rank history: #30 in FY2022, not on the FY2023–FY2024 lists and #76 in FY2025; up 42 since FY2020.
44	ROY Smith Company Top agencies Army (Department of the Army)	$1,144,163	0.3%	Rank history: not on the FY2022 list, #47 in FY2023, #57 in FY2024 and #63 in FY2025; up 6 since FY2020.
45	Goodrich Gas Inc. Top agencies Army (Department of the Army)	$1,137,056	0.3%	Rank history: #34 in FY2022, #44 in FY2023, #70 in FY2024 and #71 in FY2025; up 31 since FY2020.
46	Teledyne Flir Defense, LLC Top agencies Army (Department of the Army)	$1,109,297	0.3%	Rank history: not on the FY2022–FY2025 lists; up 356 since FY2020.
47	10X Genomics, Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration)	$1,082,340	0.3%	Rank history: #41 in FY2022 and not on the FY2023–FY2025 lists; down 4 since FY2020.
48	3M Company 4 awardees, including 3M Technical Ceramics Quapaw, LLC, Scott Technologies, Inc. and 3M Technical Ceramics Inc. Top agencies Navy (Department of the Navy) DLA (Defense Logistics Agency) Commerce (Department of Commerce)	$1,064,267	0.3%	Rank history: #29 in FY2022, not on the FY2023 list, #23 in FY2024 and #9 in FY2025; up 382 since FY2020.
49	Omni2Max, Inc. Top agencies USAF (Department of the Air Force)	$1,062,114	0.3%	Rank history: #48 in FY2022 and not on the FY2023–FY2025 lists; up 10 since FY2020.
50	Government Scientific Source Inc. Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce) Army (Department of the Army)	$1,010,252	0.3%	Rank history: #64 in FY2022, #92 in FY2023, not on the FY2024 list and #89 in FY2025; up 13 since FY2020.
51	City Chemical LLC Top agencies Navy (Department of the Navy)	$926,656	0.2%	Rank history: #63 in FY2022, #60 in FY2023, #44 in FY2024 and #44 in FY2025; up 13 since FY2020.
52	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) NASA (National Aeronautics and Space Administration) Commerce (Department of Commerce)	$909,500	0.2%	Rank history: #84 in FY2022, #70 in FY2023 and not on the FY2024–FY2025 lists; up 40 since FY2020.
53	TMG Gases, Inc. Top agencies Army (Department of the Army) Commerce (Department of Commerce) HHS (Department of Health and Human Services)	$853,997	0.2%	Rank history: not on the FY2022–FY2025 lists; up 18 since FY2020.
54	Honeywell International Inc. 2 awardees, including BW Technologies Ltd Top agencies DHS (Department of Homeland Security) DLA (Defense Logistics Agency)	$853,061	0.2%	Rank history: not on the FY2022–FY2025 lists; down 6 since FY2020.
55	Carus LLC Top agencies Army (Department of the Army)	$844,169	0.2%	Rank history: #54 in FY2022, not on the FY2023 list, #56 in FY2024 and #88 in FY2025; up 32 since FY2020.
56	The Gas Company, LLC Top agencies Navy (Department of the Navy)	$833,531	0.2%	Rank history: #40 in FY2022, #43 in FY2023, #94 in FY2024 and not on the FY2025 list; down 15 since FY2020.
57	R & M Government Services Inc. Top agencies Army (Department of the Army) VA (Department of Veterans Affairs)	$827,650	0.2%	Rank history: not on the FY2022–FY2025 lists; unchanged since FY2020.
58	RCG of North Carolina, LLC Top agencies VA (Department of Veterans Affairs) USDA (Department of Agriculture) Navy (Department of the Navy)	$811,802	0.2%	Rank history: #22 in FY2022, #16 in FY2023, #16 in FY2024 and #14 in FY2025; up 62 since FY2020.
59	Polydyne Inc. Top agencies Army (Department of the Army) IBWC (International Boundary and Water Commission U.S.-Mexico)	$803,685	0.2%	Rank history: #76 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
60	Tangram Chemical LLC Top agencies Navy (Department of the Navy)	$800,415	0.2%	Rank history: #45 in FY2022, #50 in FY2023, #81 in FY2024 and #80 in FY2025; down 7 since FY2020.
61	Marianas Gas Corp Top agencies DHA (Defense Health Agency) DLA (Defense Logistics Agency) Navy (Department of the Navy)	$784,503	0.2%	Rank history: #92 in FY2022, #63 in FY2023, #79 in FY2024 and #68 in FY2025; down 6 since FY2020.
62	GC3 Specialty Chemicals Inc. Top agencies Army (Department of the Army)	$758,160	0.2%	Rank history: #78 in FY2022 and not on the FY2023–FY2025 lists; up 113 since FY2020.
63	Rotech Healthcare Inc. Top agencies VA (Department of Veterans Affairs)	$753,033	0.2%	Rank history: #72 in FY2022 and not on the FY2023–FY2025 lists; down 53 since FY2020.
64	Lonza Group AG Through Lonza LLC Top agencies Treasury (Department of the Treasury)	$744,520	0.2%	Rank history: #75 in FY2022, #87 in FY2023 and not on the FY2024–FY2025 lists; up 141 since FY2020.
65	LNT Solutions Limited Top agencies USAF (Department of the Air Force)	$699,000	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
66	Medkoo Inc. Top agencies HHS (Department of Health and Human Services)	$680,550	0.2%	Rank history: #97 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
67	Morning Star Industries Inc. Top agencies DHS (Department of Homeland Security) GSA (General Services Administration) VA (Department of Veterans Affairs)	$666,996	0.2%	Rank history: #88 in FY2022, #91 in FY2023, #45 in FY2024 and #27 in FY2025; up 16 since FY2020.
68	Irisys, Inc. Through Societal Cdmo San Diego, LLC Top agencies HHS (Department of Health and Human Services)	$662,451	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
69	Colonial Group Inc. Through Colonial Energy Inc. Top agencies DLA (Defense Logistics Agency)	$657,167	0.2%	Rank history: not on the FY2022–FY2025 lists; down 23 since FY2020.
70	S.j. Smith Co., Inc. Top agencies Army (Department of the Army)	$639,475	0.2%	Rank history: not on the FY2022–FY2025 lists; down 10 since FY2020.
71	Bhate Environmental Associates, Inc. Top agencies Army (Department of the Army)	$613,504	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
72	Tauber Oil Company Through Interconn Resources LLC Top agencies VA (Department of Veterans Affairs) NASA (National Aeronautics and Space Administration)	$610,274	0.2%	Rank history: not on the FY2022–FY2025 lists; up 98 since FY2020.
73	Austin R Harris Top agencies DOI (Department of the Interior)	$598,965	0.2%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
74	Alexander/Ryan Marine & Safety Co. Through Drew Marine USA Inc. Top agencies Navy (Department of the Navy)	$594,460	0.2%	Rank history: not on the FY2022–FY2025 lists; down 68 since FY2020.
75	Boulder Consulting & Products, LLC Top agencies Army (Department of the Army)	$590,286	0.2%	Rank history: #67 in FY2022, #95 in FY2023 and not on the FY2024–FY2025 lists; up 34 since FY2020.
76	Mcgean-Rohco Inc. 2 awardees Top agencies USAF (Department of the Air Force) Navy (Department of the Navy) DLA (Defense Logistics Agency)	$586,277	0.2%	Rank history: #58 in FY2022, #72 in FY2023 and not on the FY2024–FY2025 lists; up 21 since FY2020.
77	Steward Advanced Materials LLC Top agencies Navy (Department of the Navy)	$579,550	0.2%	Rank history: #59 in FY2022, not on the FY2023–FY2024 lists and #78 in FY2025; new, not ranked in FY2020.
78	Dubois Chemicals Inc. Top agencies Army (Department of the Army)	$575,256	0.2%	Rank history: #83 in FY2022, not on the FY2023 list, #88 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
79	W.a. Cleary Corporation Top agencies Army (Department of the Army)	$568,426	0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
80	Latitude Usa, LLC Top agencies Treasury (Department of the Treasury)	$560,400	0.1%	Rank history: not on the FY2022–FY2025 lists; up 94 since FY2020.
81	Farmers Fertilizer Co Top agencies DOI (Department of the Interior) Army (Department of the Army) DLA (Defense Logistics Agency)	$552,015	0.1%	Rank history: #85 in FY2022 and not on the FY2023–FY2025 lists; down 1 since FY2020.
82	Stratatech Corporation Through INO Therapeutics LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$543,410	0.1%	Rank history: not on the FY2022–FY2025 lists; up 69 since FY2020.
83	NRG Energy, Inc. Through NRG Business Marketing LLC Top agencies DOJ (Department of Justice) Army (Department of the Army)	$532,084	0.1%	Rank history: #14 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in FY2020.
84	Capitol Carbonic Corp Top agencies HHS (Department of Health and Human Services) Commerce (Department of Commerce)	$517,531	0.1%	Rank history: #60 in FY2022, not on the FY2023 list, #90 in FY2024 and #51 in FY2025; up 162 since FY2020.
85	Seneca Mineral Company Top agencies Army (Department of the Army) USAF (Department of the Air Force)	$501,676	0.1%	Rank history: #44 in FY2022, #58 in FY2023, #84 in FY2024 and #59 in FY2025; up 20 since FY2020.
86	North American Refrigerants Inc. Top agencies NASA (National Aeronautics and Space Administration)	$494,400	0.1%	Rank history: not on the FY2022–FY2023 lists, #55 in FY2024 and not on the FY2025 list; new, not ranked in FY2020.
87	Thermo Electron Corporation 6 awardees, including Life Technologies Corporation, EP Scientific Products LLC and Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior) DOJ (Department of Justice)	$489,226	0.1%	Rank history: not on the FY2022–FY2025 lists; up 35 since FY2020.
88	Suburban Propane Partners, L.P 2 awardees Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency) Army (Department of the Army)	$478,407	0.1%	Rank history: #52 in FY2022 and not on the FY2023–FY2025 lists; up 19 since FY2020.
89	Strategic Consulting Alliances, LLC Top agencies Army (Department of the Army)	$471,418	0.1%	Rank history: not on the FY2022 list, #85 in FY2023, #65 in FY2024 and #96 in FY2025; new, not ranked in FY2020.
90	Christopher I. Oyolokor SR. Top agencies Army (Department of the Army) Navy (Department of the Navy) HHS (Department of Health and Human Services)	$465,414	0.1%	Rank history: not on the FY2022 list, #96 in FY2023, #99 in FY2024 and #95 in FY2025; up 96 since FY2020.
91	Alligare LLC Top agencies DOI (Department of the Interior)	$443,902	0.1%	Rank history: not on the FY2022 list, #82 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
92	Expert Depot S.R.L. Top agencies Navy (Department of the Navy)	$443,182	0.1%	Rank history: not on the FY2022–FY2025 lists; up 50 since FY2020.
93	Orison Marketing LLC 2 awardees Top agencies USAF (Department of the Air Force) DLA (Defense Logistics Agency)	$439,671	0.1%	Rank history: #62 in FY2022, #73 in FY2023, #87 in FY2024 and not on the FY2025 list; up 40 since FY2020.
94	BSE Performance, LLC Top agencies Army (Department of the Army) DOI (Department of the Interior) Navy (Department of the Navy)	$432,502	0.1%	Rank history: #70 in FY2022, not on the FY2023 list, #100 in FY2024 and not on the FY2025 list; down 20 since FY2020.
95	Teledyne Technologies Incorporated Through Teledyne Flir Defense, LLC Top agencies Army (Department of the Army)	$429,572	0.1%	Rank history: #32 in FY2022, not on the FY2023 list, #40 in FY2024 and #29 in FY2025; new, not ranked in FY2020.
96	Cobb Electric Membership Corporation Through Gas South, LLC Top agencies NASA (National Aeronautics and Space Administration) VA (Department of Veterans Affairs)	$426,057	0.1%	Rank history: #23 in FY2022, #51 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in FY2020.
97	Diamond Geeks, Corp. Through Dgci Corporation Top agencies DLA (Defense Logistics Agency)	$411,680	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
98	Medchemexpress LLC Top agencies HHS (Department of Health and Human Services)	$403,738	0.1%	Rank history: not on the FY2022–FY2025 lists; new, not ranked in FY2020.
99	Chuo Shoko Co., Ltd Top agencies Navy (Department of the Navy)	$401,200	0.1%	Rank history: not on the FY2022–FY2025 lists; up 62 since FY2020.
100	Gasochem International, Llc. Top agencies Army (Department of the Army) USDA (Department of Agriculture)	$396,998	0.1%	Rank history: not on the FY2022–FY2023 lists, #93 in FY2024 and #97 in FY2025; up 17 since FY2020.

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100 of 870 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC 68

Code	Net obligations	Largest contractor
6810 Chemicals	$138,824,980	Sicpa Holding SA
6850 Miscellaneous Chemical Specialties	$109,744,051	Science Applications International Corporation
6830 Gases: Compressed and Liquefied	$84,520,549	Hudson Technologies, Inc.
6840 Pest Control Agents and Disinfectants	$12,064,835	Environmental Applied Technology Corporation

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 $382 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. 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.
Fiscal year 2021 ran Oct 1, 2020 – Sep 30, 2021. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2020. "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. The step from FY2020 takes the color of the rank change beside it.
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 68 contractors in FY2021?

1. Science Applications International Corporation ($60.8M), 2. Sicpa Holding SA ($60.6M), 3. Perimeter Solutions LP ($28.8M), 4. Hudson Technologies, Inc. ($10.1M), 5. Airgas Inc. ($9.14M), 6. Drew Marine USA Inc ($9.11M), 7. RAS Enterprises LLC ($8.69M), 8. Exelon Corporation ($6.06M), 9. TC Chemicals, LLC ($4.54M), 10. Amentum Services, Inc. ($3.83M).

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