Top 100 Contractors in NAICS 32518: Other Basic Inorganic Chemical Manufacturing, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 32518: Other Basic Inorganic Chemical Manufacturing, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 98% of NAICS 32518 contract dollars from July 2025 through June 2026

Contract obligations: $3,017,651,259 Net of deobligations, by contracts coded NAICS 32518 or a code under it
Contractors: 122 Parent companies with an obligation
Largest contractor: American Centrifuge Operating, LLC $900 million, 29.6% 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	American Centrifuge Operating, LLC Top agencies DOE (Department of Energy)	$900,000,000	29.6%	Rank history: not on the FY2021–FY2024 lists and #28 in FY2025; up 24 since Jul 2024–Jun 2025.
2	Orano Federal Services LLC Top agencies DOE (Department of Energy)	$900,000,000	29.6%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; up 26 since Jul 2024–Jun 2025.
3	General Matter, Inc. Top agencies DOE (Department of Energy)	$900,000,000	29.6%	Rank history: not on the FY2021–FY2024 lists and #32 in FY2025; up 26 since Jul 2024–Jun 2025.
4	L3Harris Technologies, Inc. Through Bwxt Ordnance Tennessee, Inc. Top agencies DOE (Department of Energy)	$130,800,000	4.3%	Rank history: not on the FY2021–FY2024 lists and #4 in FY2025; new, not ranked in Jul 2024–Jun 2025.
5	BWX Technologies, Inc. 2 awardees, including Nuclear Fuel Services Inc. and Bwxt Nuclear Operations Group, Inc. Top agencies DOE (Department of Energy)	$66,865,171	2.2%	Rank history: not on the FY2021 list, #2 in FY2022, #2 in FY2023, #2 in FY2024 and #2 in FY2025; down 3 since Jul 2024–Jun 2025.
6	Calca Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$62,647,382	2.1%	Rank history: not on the FY2021 list, #3 in FY2022, not on the FY2023–FY2024 lists and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
7	Mid-America Conversion Services, LLC Top agencies DOE (Department of Energy)	$15,513,178	0.5%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023, #1 in FY2024 and #1 in FY2025; down 6 since Jul 2024–Jun 2025.
8	Specialized Materials and Chemicals, LLC Top agencies Army (Department of the Army)	$8,530,560	0.3%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023, #4 in FY2024 and #9 in FY2025; down 3 since Jul 2024–Jun 2025.
9	Nation Ford Chemical Co Top agencies Army (Department of the Army)	$4,353,830	0.1%	Rank history: not on the FY2021–FY2024 lists and #6 in FY2025; new, not ranked in Jul 2024–Jun 2025.
10	Kuehne Chemical Company, Inc. Top agencies Army (Department of the Army)	$3,808,000	0.1%	Rank history: #5 in FY2021, #6 in FY2022, #9 in FY2023, #6 in FY2024 and #11 in FY2025; down 1 since Jul 2024–Jun 2025.
11	Tungco, Incorporated Top agencies DLA (Defense Logistics Agency)	$2,988,300	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
12	Usalco, LLC Top agencies Army (Department of the Army)	$2,956,802	0.1%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #8 in FY2025; down 4 since Jul 2024–Jun 2025.
13	Ezekiel Bahar Top agencies Army (Department of the Army)	$2,284,389	0.1%	Rank history: not on the FY2021–FY2024 lists and #5 in FY2025; down 6 since Jul 2024–Jun 2025.
14	Suffolk Sales & Service Corp Top agencies Army (Department of the Army)	$1,386,664	<0.1%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; up 77 since Jul 2024–Jun 2025.
15	Suffolk Solutions, Inc. Top agencies Army (Department of the Army)	$1,375,120	<0.1%	Rank history: #9 in FY2021, #8 in FY2022, #39 in FY2023, #32 in FY2024 and #16 in FY2025; down 2 since Jul 2024–Jun 2025.
16	Hawkins, Inc. 2 awardees, including Amerochem Corporation Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$1,254,532	<0.1%	Rank history: #53 in FY2021, #66 in FY2022, #61 in FY2023, #59 in FY2024 and #13 in FY2025; unchanged since Jul 2024–Jun 2025.
17	Chemble Solutions, LLC Top agencies Navy (Department of the Navy)	$1,205,389	<0.1%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #54 in FY2025; up 26 since Jul 2024–Jun 2025.
18	American Fast Freight Inc. Through Dubois Chemicals, Inc. Top agencies Army (Department of the Army)	$741,967	<0.1%	Rank history: not on the FY2021–FY2024 lists and #22 in FY2025; up 28 since Jul 2024–Jun 2025.
19	Phoenix V LLC Top agencies Army (Department of the Army)	$730,266	<0.1%	Rank history: #22 in FY2021, #20 in FY2022, #20 in FY2023, #27 in FY2024 and #37 in FY2025; up 23 since Jul 2024–Jun 2025.
20	Mcgean-Rohco, Inc. Top agencies USAF (Department of the Air Force)	$641,306	<0.1%	Rank history: #17 in FY2021, #12 in FY2022, #14 in FY2023, #15 in FY2024 and #15 in FY2025; down 5 since Jul 2024–Jun 2025.
21	Carus LLC Top agencies Army (Department of the Army)	$595,508	<0.1%	Rank history: #10 in FY2021, #11 in FY2022, #19 in FY2023, #12 in FY2024 and #20 in FY2025; up 1 since Jul 2024–Jun 2025.
22	GC3 Specialty Chemicals Inc. Top agencies Army (Department of the Army)	$585,978	<0.1%	Rank history: #11 in FY2021, #13 in FY2022, #46 in FY2023, #28 in FY2024 and #26 in FY2025; down 3 since Jul 2024–Jun 2025.
23	Brenntag Pacific Inc Top agencies DOI (Department of the Interior)	$476,911	<0.1%	Rank history: not on the FY2021–FY2024 lists and #23 in FY2025; down 2 since Jul 2024–Jun 2025.
24	Custom Gas Solutions LLC Top agencies Army (Department of the Army)	$447,250	<0.1%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; new, not ranked in Jul 2024–Jun 2025.
25	Chuo Bussan Co.,Ltd. Top agencies USAF (Department of the Air Force)	$423,761	<0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023, #40 in FY2024 and #34 in FY2025; up 8 since Jul 2024–Jun 2025.
26	Linde Puerto Rico B.V. Top agencies DLA (Defense Logistics Agency)	$404,046	<0.1%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #35 in FY2025; up 5 since Jul 2024–Jun 2025.
27	Expert Depot S.R.L. Top agencies Navy (Department of the Navy)	$380,470	<0.1%	Rank history: #16 in FY2021, #26 in FY2022, #22 in FY2023, #22 in FY2024 and #48 in FY2025; up 11 since Jul 2024–Jun 2025.
28	Showa Chemical Industry Co.,Ltd. Top agencies Navy (Department of the Navy)	$380,039	<0.1%	Rank history: not on the FY2021 list, #19 in FY2022, #15 in FY2023, #18 in FY2024 and #19 in FY2025; down 11 since Jul 2024–Jun 2025.
29	Wosb Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$371,836	<0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 40 since Jul 2024–Jun 2025.
30	Hill Brothers Chemical Company Top agencies DOI (Department of the Interior)	$365,771	<0.1%	Rank history: #19 in FY2021, #25 in FY2022, #17 in FY2023, #25 in FY2024 and #24 in FY2025; up 4 since Jul 2024–Jun 2025.
31	One Speed Ventures LLC Top agencies DOI (Department of the Interior)	$333,520	<0.1%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #40 in FY2025; up 8 since Jul 2024–Jun 2025.
32	Sae Manufacturing Specialties Corp. Top agencies Army (Department of the Army)	$318,950	<0.1%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #18 in FY2025; down 2 since Jul 2024–Jun 2025.
33	Envirotech Services, LLC Top agencies Army (Department of the Army)	$305,600	<0.1%	Rank history: #32 in FY2021, #34 in FY2022, #28 in FY2023, #29 in FY2024 and #39 in FY2025; up 3 since Jul 2024–Jun 2025.
34	Gryphon Technologies L.C. Through American Pacific Corporation Top agencies Navy (Department of the Navy)	$264,544	<0.1%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #41 in FY2025; up 3 since Jul 2024–Jun 2025.
35	JTF Business Solutions Corp. Top agencies DLA (Defense Logistics Agency)	$254,985	<0.1%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #47 in FY2025; up 15 since Jul 2024–Jun 2025.
36	BC Market Solutions LLC Top agencies Navy (Department of the Navy)	$237,594	<0.1%	Rank history: #26 in FY2021, #50 in FY2022, #33 in FY2023, #24 in FY2024 and #38 in FY2025; up 19 since Jul 2024–Jun 2025.
37	MJL Enterprises, LLC Top agencies DOI (Department of the Interior) DLA (Defense Logistics Agency)	$222,082	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
38	Island Pyrochemical Industries Corp Top agencies Army (Department of the Army)	$199,026	<0.1%	Rank history: #72 in FY2021, #39 in FY2022, #47 in FY2023, not on the FY2024 list and #43 in FY2025; new, not ranked in Jul 2024–Jun 2025.
39	Earth Science Laboratories Inc. Top agencies Army (Department of the Army)	$190,575	<0.1%	Rank history: not on the FY2021–FY2022 lists, #29 in FY2023, #33 in FY2024 and not on the FY2025 list; up 9 since Jul 2024–Jun 2025.
40	OO Consulting LLC Top agencies USAF (Department of the Air Force)	$185,448	<0.1%	Rank history: not on the FY2021–FY2024 lists and #46 in FY2025; up 11 since Jul 2024–Jun 2025.
41	Ruptured Duck LLC Top agencies DLA (Defense Logistics Agency)	$184,464	<0.1%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
42	Linde Inc. Top agencies DLA (Defense Logistics Agency)	$154,232	<0.1%	Rank history: not on the FY2021–FY2024 lists and #17 in FY2025; down 24 since Jul 2024–Jun 2025.
43	Daijin Co.,Ltd. Top agencies Navy (Department of the Navy)	$152,421	<0.1%	Rank history: not on the FY2021–FY2024 lists and #67 in FY2025; up 55 since Jul 2024–Jun 2025.
44	JTF Business Systems Corporation Top agencies DLA (Defense Logistics Agency)	$146,386	<0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 59 since Jul 2024–Jun 2025.
45	NTU Technologies Inc Top agencies DOI (Department of the Interior)	$138,587	<0.1%	Rank history: #77 in FY2021, #38 in FY2022, #45 in FY2023, #31 in FY2024 and #50 in FY2025; down 4 since Jul 2024–Jun 2025.
46	Chuo Shoko Co., Ltd Top agencies Navy (Department of the Navy)	$120,871	<0.1%	Rank history: #50 in FY2021, #63 in FY2022, #89 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
47	Martelle Water Treatment, Inc. Top agencies Army (Department of the Army)	$103,750	<0.1%	Rank history: #65 in FY2021, #44 in FY2022, #53 in FY2023, #66 in FY2024 and #64 in FY2025; up 10 since Jul 2024–Jun 2025.
48	Eckert & Ziegler Analytics, Inc. Top agencies EPA (Environmental Protection Agency) USAF (Department of the Air Force)	$103,727	<0.1%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #44 in FY2025; down 13 since Jul 2024–Jun 2025.
49	Bird-Johnson Propeller Company, LLC Top agencies DHS (Department of Homeland Security)	$98,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
50	MRG Services LLC Top agencies USDA (Department of Agriculture)	$96,690	<0.1%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	Premier Trading Company, LLC Top agencies Army (Department of the Army)	$95,816	<0.1%	Rank history: #56 in FY2021, not on the FY2022 list, #25 in FY2023, not on the FY2024 list and #59 in FY2025; up 22 since Jul 2024–Jun 2025.
52	Idexx Laboratories Inc. Top agencies Army (Department of the Army)	$92,491	<0.1%	Rank history: #39 in FY2021, not on the FY2022 list, #50 in FY2023, #41 in FY2024 and #60 in FY2025; up 4 since Jul 2024–Jun 2025.
53	Oshima Shokai Co., Ltd. Top agencies Navy (Department of the Navy)	$90,811	<0.1%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and #71 in FY2025; up 17 since Jul 2024–Jun 2025.
54	Garratt-Callahan Company Top agencies Army (Department of the Army)	$85,152	<0.1%	Rank history: #40 in FY2021, #64 in FY2022, #42 in FY2023, #43 in FY2024 and #70 in FY2025; up 4 since Jul 2024–Jun 2025.
55	Government Scientific Source Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$81,260	<0.1%	Rank history: not on the FY2021 list, #92 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
56	Valimet Inc. Top agencies Navy (Department of the Navy)	$76,450	<0.1%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
57	TMG Services, Inc. Top agencies DOI (Department of the Interior)	$70,024	<0.1%	Rank history: not on the FY2021–FY2024 lists and #66 in FY2025; new, not ranked in Jul 2024–Jun 2025.
58	KAP Technochem Usa, Inc. Top agencies Army (Department of the Army)	$66,806	<0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #34 in FY2023, #35 in FY2024 and #42 in FY2025; down 18 since Jul 2024–Jun 2025.
59	Mitsubishi Chemical Holdings Corporation Through Nippon Sanso Matheson, Inc. Top agencies DOJ (Department of Justice)	$62,191	<0.1%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Coltcam LLC Top agencies DLA (Defense Logistics Agency)	$60,805	<0.1%	Rank history: #95 in FY2021, #43 in FY2022, #75 in FY2023, #62 in FY2024 and #58 in FY2025; down 6 since Jul 2024–Jun 2025.
61	Cutting Edge Tool Supply, Inc. Top agencies Treasury (Department of the Treasury)	$59,289	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Bard Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$51,903	<0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Allied Mineral Products LLC Top agencies Navy (Department of the Navy)	$48,418	<0.1%	Rank history: #88 in FY2021, not on the FY2022 list, #54 in FY2023, #60 in FY2024 and #62 in FY2025; down 3 since Jul 2024–Jun 2025.
64	Paragon One Group LLC Top agencies DLA (Defense Logistics Agency)	$47,893	<0.1%	Rank history: not on the FY2021–FY2023 lists, #88 in FY2024 and #91 in FY2025; up 16 since Jul 2024–Jun 2025.
65	Trace Sciences International, Inc. Top agencies VA (Department of Veterans Affairs)	$46,223	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
66	Plating International Inc. Top agencies Army (Department of the Army)	$45,565	<0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023, #45 in FY2024 and #69 in FY2025; down 4 since Jul 2024–Jun 2025.
67	Accrabond Corp Top agencies Army (Department of the Army)	$44,608	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
68	Eckert & Ziegler Isotope Products Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy)	$38,565	<0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
69	Veteran Chemicals, Inc. Top agencies Army (Department of the Army)	$38,048	<0.1%	Rank history: #45 in FY2021, #57 in FY2022, #41 in FY2023, #36 in FY2024 and #52 in FY2025; down 20 since Jul 2024–Jun 2025.
70	Aqua-Pure Inc. Top agencies DOI (Department of the Interior)	$35,783	<0.1%	Rank history: #59 in FY2021, #59 in FY2022, #63 in FY2023, not on the FY2024 list and #82 in FY2025; up 2 since Jul 2024–Jun 2025.
71	Vastglobe Logistics LLC Top agencies Army (Department of the Army)	$34,160	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
72	K & L Supply, Inc. Top agencies Army (Department of the Army)	$33,974	<0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #47 in FY2024 and #68 in FY2025; up 2 since Jul 2024–Jun 2025.
73	Silver Bird Solutions LLC Top agencies DLA (Defense Logistics Agency)	$32,602	<0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; new, not ranked in Jul 2024–Jun 2025.
74	San Antonio Lighthouse for the Blind Top agencies DLA (Defense Logistics Agency)	$30,844	<0.1%	Rank history: #34 in FY2021, #55 in FY2022, #38 in FY2023, #38 in FY2024 and #61 in FY2025; down 21 since Jul 2024–Jun 2025.
75	Central Jersey Office Equipment Inc. Top agencies DLA (Defense Logistics Agency)	$30,446	<0.1%	Rank history: not on the FY2021–FY2024 lists and #77 in FY2025; up 6 since Jul 2024–Jun 2025.
76	Airgas USA LLC Top agencies DLA (Defense Logistics Agency)	$29,403	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 36 since Jul 2024–Jun 2025.
77	Circus Ice Cream Inc. Top agencies Navy (Department of the Navy)	$27,768	<0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
78	Chemical Consultants LLC Top agencies USDA (Department of Agriculture)	$26,918	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
79	Amaya Solutions Inc. Top agencies Navy (Department of the Navy)	$26,850	<0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #55 in FY2023, #50 in FY2024 and #65 in FY2025; down 18 since Jul 2024–Jun 2025.
80	Marine Care International B.V. Through Marine Care B.V. Top agencies Navy (Department of the Navy)	$26,592	<0.1%	Rank history: not on the FY2021–FY2024 lists and #90 in FY2025; new, not ranked in Jul 2024–Jun 2025.
81	TECH Service Solutions LLC Top agencies Army (Department of the Army)	$26,410	<0.1%	Rank history: not on the FY2021–FY2022 lists, #71 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
82	Albemarle Corp Top agencies Navy (Department of the Navy)	$25,500	<0.1%	Rank history: not on the FY2021–FY2023 lists, #81 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
83	Hubbard-Hall Inc. Top agencies Army (Department of the Army)	$23,751	<0.1%	Rank history: #46 in FY2021, #52 in FY2022, #76 in FY2023, #55 in FY2024 and #80 in FY2025; down 16 since Jul 2024–Jun 2025.
84	Parker Industries LLC Top agencies Army (Department of the Army)	$23,150	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
85	Air Products and Chemicals, Inc. Top agencies DLA (Defense Logistics Agency)	$18,173	<0.1%	Rank history: not on the FY2021–FY2024 lists and #55 in FY2025; down 33 since Jul 2024–Jun 2025.
86	Government MLO Supplies USA Inc Top agencies Army (Department of the Army)	$18,140	<0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #74 in FY2025; down 27 since Jul 2024–Jun 2025.
87	Red Orange International L.L.C. Top agencies DOS (Department of State)	$17,080	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
88	Premier & Companies, Inc. Top agencies DLA (Defense Logistics Agency)	$16,045	<0.1%	Rank history: not on the FY2021 list, #23 in FY2022, #58 in FY2023, #46 in FY2024 and #86 in FY2025; down 3 since Jul 2024–Jun 2025.
89	AGM Container Controls Inc. Top agencies Navy (Department of the Navy)	$15,598	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	Otsuka Holdings Co. Ltd. Through Cambridge Isotope Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$14,788	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; new, not ranked in Jul 2024–Jun 2025.
91	Gasochem International, Llc. Top agencies Army (Department of the Army)	$14,264	<0.1%	Rank history: #20 in FY2021, #32 in FY2022, #69 in FY2023, #48 in FY2024 and #78 in FY2025; down 26 since Jul 2024–Jun 2025.
92	4Tech Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$14,101	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	The A.r.k. Enterprises. Inc. Top agencies DLA (Defense Logistics Agency)	$13,750	<0.1%	Rank history: not on the FY2021–FY2023 lists, #73 in FY2024 and not on the FY2025 list; down 15 since Jul 2024–Jun 2025.
94	NMH Tech, Inc. Top agencies Army (Department of the Army)	$13,475	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
95	Y & S Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$12,912	<0.1%	Rank history: not on the FY2021–FY2024 lists and #85 in FY2025; down 9 since Jul 2024–Jun 2025.
96	EHB Supply Top agencies Navy (Department of the Navy)	$12,391	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
97	Tattersall Supply, LLC Top agencies Army (Department of the Army)	$11,760	<0.1%	Rank history: #76 in FY2021, #67 in FY2022, #87 in FY2023, #52 in FY2024 and #73 in FY2025; down 29 since Jul 2024–Jun 2025.
98	Midland Scientific Inc. Top agencies DLA (Defense Logistics Agency)	$11,102	<0.1%	Rank history: not on the FY2021–FY2025 lists; up 9 since Jul 2024–Jun 2025.
99	Sifco Industries Inc. Through Sifco Applied Surface Concepts, LLC Top agencies Navy (Department of the Navy)	$9,005	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Thatcher Company, Inc. Top agencies DOI (Department of the Interior)	$8,675	<0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; down 16 since Jul 2024–Jun 2025.

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100 of 122 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 32518

Code	Net obligations	Largest contractor
325180 Other Basic Inorganic Chemical Manufacturing	$3,017,651,259	American Centrifuge Operating, 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 $3.04 billion 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.
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 Jul 2024–Jun 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 NAICS 32518 contractors in Jul 2025–Jun 2026?

1. American Centrifuge Operating, LLC ($900M), 2. Orano Federal Services LLC ($900M), 3. General Matter, Inc. ($900M), 4. L3Harris Technologies, Inc. ($131M), 5. BWX Technologies, Inc. ($66.9M), 6. Calca Solutions, LLC ($62.6M), 7. Mid-America Conversion Services, LLC ($15.5M), 8. Specialized Materials and Chemicals, LLC ($8.53M), 9. Nation Ford Chemical Co ($4.35M), 10. Kuehne Chemical Company, Inc. ($3.81M).

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