Top 100 Contractors in NAICS 32518: Other Basic Inorganic Chemical Manufacturing, FY2025

Name: Top 100 Contractors in NAICS 32518: Other Basic Inorganic Chemical Manufacturing, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 92% of FY2025 NAICS 32518 contract dollars

Contract obligations: $335,317,522 Net of deobligations, by contracts coded NAICS 32518 or a code under it
Contractors: 138 Parent companies with an obligation
Largest contractor: Mid-America Conversion Services, LLC $112 million, 33.0% 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	Mid-America Conversion Services, LLC Top agencies DOE (Department of Energy)	$111,926,378	33.0%	Rank history: #1 in FY2021, #1 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	BWX Technologies, Inc. 2 awardees, including Nuclear Fuel Services Inc. and Bwxt Nuclear Operations Group, Inc. Top agencies DOE (Department of Energy)	$65,570,356	19.3%	Rank history: not on the FY2021 list, #2 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Calca Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$65,122,219	19.2%	Rank history: not on the FY2021 list, #3 in FY2022 and not on the FY2023–FY2024 lists; returned.
4	L3Harris Technologies, Inc. Through Bwxt Ordnance Tennessee, Inc. Top agencies DOE (Department of Energy)	$46,800,000	13.8%	Rank history: not on the FY2021–FY2024 lists; new.
5	Ezekiel Bahar Top agencies Army (Department of the Army)	$6,286,579	1.9%	Rank history: not on the FY2021–FY2024 lists; new.
6	Nation Ford Chemical Co Top agencies Army (Department of the Army)	$4,353,830	1.3%	Rank history: not on the FY2021–FY2024 lists; new.
7	Lonza Walkersville Inc. Through Calca Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$2,914,007	0.9%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2024; down 4 since FY2024.
8	Usalco, LLC Top agencies Army (Department of the Army)	$2,875,437	0.8%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2024; up 6 since FY2024.
9	Specialized Materials and Chemicals, LLC Top agencies Army (Department of the Army)	$2,874,240	0.8%	Rank history: not on the FY2021–FY2022 lists, #6 in FY2023 and #4 in FY2024; down 5 since FY2024.
10	Nidaz LLC Top agencies Army (Department of the Army)	$2,320,219	0.7%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2024; up 47 since FY2024.
11	Kuehne Chemical Company, Inc. Top agencies Army (Department of the Army)	$2,182,984	0.6%	Rank history: #5 in FY2021, #6 in FY2022, #9 in FY2023 and #6 in FY2024; down 5 since FY2024.
12	Accumet Materials Co LLC Top agencies Army (Department of the Army)	$1,705,000	0.5%	Rank history: not on the FY2021–FY2024 lists; new.
13	Hawkins, Inc. 2 awardees, including Amerochem Corporation Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$1,213,583	0.4%	Rank history: #53 in FY2021, #66 in FY2022, #61 in FY2023 and #59 in FY2024; up 46 since FY2024.
14	Amerochem Corporation Top agencies Navy (Department of the Navy)	$1,201,432	0.4%	Rank history: #8 in FY2021, #9 in FY2022, #10 in FY2023 and #7 in FY2024; down 7 since FY2024.
15	Mcgean-Rohco, Inc. Top agencies USAF (Department of the Air Force)	$972,503	0.3%	Rank history: #17 in FY2021, #12 in FY2022, #14 in FY2023 and #15 in FY2024; unchanged since FY2024.
16	Suffolk Solutions, Inc. Top agencies Army (Department of the Army)	$933,915	0.3%	Rank history: #9 in FY2021, #8 in FY2022, #39 in FY2023 and #32 in FY2024; up 16 since FY2024.
17	Linde Inc. Top agencies DLA (Defense Logistics Agency)	$896,824	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
18	Sae Manufacturing Specialties Corp. Top agencies Army (Department of the Army)	$816,903	0.2%	Rank history: not on the FY2021–FY2023 lists and #16 in FY2024; down 2 since FY2024.
19	Showa Chemical Industry Co.,Ltd. Top agencies Navy (Department of the Navy)	$717,197	0.2%	Rank history: not on the FY2021 list, #19 in FY2022, #15 in FY2023 and #18 in FY2024; down 1 since FY2024.
20	Carus LLC Top agencies Army (Department of the Army)	$691,937	0.2%	Rank history: #10 in FY2021, #11 in FY2022, #19 in FY2023 and #12 in FY2024; down 8 since FY2024.
21	Condy Holdings LLC Through Carus LLC Top agencies Army (Department of the Army)	$559,267	0.2%	Rank history: not on the FY2021 list, #48 in FY2022, #21 in FY2023 and not on the FY2024 list; returned.
22	American Fast Freight Inc. Through Dubois Chemicals, Inc. Top agencies Army (Department of the Army)	$548,599	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
23	Brenntag Pacific Inc Top agencies DOI (Department of the Interior)	$535,732	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
24	Hill Brothers Chemical Company Top agencies DOI (Department of the Interior)	$511,934	0.2%	Rank history: #19 in FY2021, #25 in FY2022, #17 in FY2023 and #25 in FY2024; up 1 since FY2024.
25	Daiichi Bussan Co., Ltd. Top agencies USAF (Department of the Air Force)	$510,233	0.2%	Rank history: #13 in FY2021, #15 in FY2022 and not on the FY2023–FY2024 lists; returned.
26	GC3 Specialty Chemicals Inc. Top agencies Army (Department of the Army)	$507,194	0.1%	Rank history: #11 in FY2021, #13 in FY2022, #46 in FY2023 and #28 in FY2024; up 2 since FY2024.
27	Lis Technologies Inc. Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
28	American Centrifuge Operating, LLC Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
29	Louisiana Energy Services, LLC Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
30	Global Laser Enrichment LLC Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
31	Orano Federal Services LLC Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
32	General Matter, Inc. Top agencies DOE (Department of Energy)	$500,000	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
33	Suffolk Sales & Service Corp Top agencies Army (Department of the Army) DOI (Department of the Interior)	$464,489	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
34	Chuo Bussan Co.,Ltd. Top agencies USAF (Department of the Air Force)	$420,456	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023 and #40 in FY2024; up 6 since FY2024.
35	Linde Puerto Rico B.V. Top agencies DLA (Defense Logistics Agency)	$351,037	0.1%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; down 12 since FY2024.
36	Custom Gas Solutions LLC Top agencies Army (Department of the Army)	$303,250	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
37	Phoenix V LLC Top agencies Army (Department of the Army)	$299,161	0.1%	Rank history: #22 in FY2021, #20 in FY2022, #20 in FY2023 and #27 in FY2024; down 10 since FY2024.
38	BC Market Solutions LLC Top agencies Navy (Department of the Navy)	$288,879	0.1%	Rank history: #26 in FY2021, #50 in FY2022, #33 in FY2023 and #24 in FY2024; down 14 since FY2024.
39	Envirotech Services, LLC Top agencies Army (Department of the Army)	$286,400	0.1%	Rank history: #32 in FY2021, #34 in FY2022, #28 in FY2023 and #29 in FY2024; down 10 since FY2024.
40	One Speed Ventures LLC Top agencies DOI (Department of the Interior)	$247,600	0.1%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2024; down 14 since FY2024.
41	Gryphon Technologies L.C. Through American Pacific Corporation Top agencies Navy (Department of the Navy)	$239,050	0.1%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 32 since FY2024.
42	KAP Technochem Usa, Inc. Top agencies Army (Department of the Army)	$221,742	0.1%	Rank history: not on the FY2021 list, #78 in FY2022, #34 in FY2023 and #35 in FY2024; down 7 since FY2024.
43	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 and not on the FY2024 list; returned.
44	Eckert & Ziegler Analytics, Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$189,032	0.1%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; down 14 since FY2024.
45	Ruptured Duck LLC Top agencies DLA (Defense Logistics Agency)	$184,464	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
46	OO Consulting LLC Top agencies USAF (Department of the Air Force)	$180,321	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
47	JTF Business Solutions Corp. Top agencies DLA (Defense Logistics Agency)	$166,926	<0.1%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; down 3 since FY2024.
48	Expert Depot S.R.L. Top agencies Navy (Department of the Navy)	$164,569	<0.1%	Rank history: #16 in FY2021, #26 in FY2022, #22 in FY2023 and #22 in FY2024; down 26 since FY2024.
49	Polydyne Inc. Top agencies Army (Department of the Army)	$156,400	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
50	NTU Technologies Inc Top agencies DOI (Department of the Interior)	$146,468	<0.1%	Rank history: #77 in FY2021, #38 in FY2022, #45 in FY2023 and #31 in FY2024; down 19 since FY2024.
51	Amato Industries, Inc./Amchlor. Top agencies Navy (Department of the Navy)	$138,376	<0.1%	Rank history: #81 in FY2021, #47 in FY2022, #51 in FY2023 and not on the FY2024 list; returned.
52	Veteran Chemicals, Inc. Top agencies Army (Department of the Army)	$135,092	<0.1%	Rank history: #45 in FY2021, #57 in FY2022, #41 in FY2023 and #36 in FY2024; down 16 since FY2024.
53	Water & Energy Systems Technology, Inc. Top agencies USAF (Department of the Air Force)	$130,878	<0.1%	Rank history: not on the FY2021 list, #21 in FY2022, #18 in FY2023 and #19 in FY2024; down 34 since FY2024.
54	Chemble Solutions, LLC Top agencies Navy (Department of the Navy)	$129,346	<0.1%	Rank history: not on the FY2021–FY2023 lists and #63 in FY2024; up 9 since FY2024.
55	Air Products and Chemicals, Inc. Top agencies DLA (Defense Logistics Agency)	$110,253	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
56	Blue Ash Industrial Supply Inc. Top agencies Navy (Department of the Navy)	$105,034	<0.1%	Rank history: not on the FY2021 list, #42 in FY2022, not on the FY2023 list and #49 in FY2024; down 7 since FY2024.
57	MRG Services LLC Top agencies USDA (Department of Agriculture)	$96,690	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
58	Coltcam LLC Top agencies DLA (Defense Logistics Agency)	$94,232	<0.1%	Rank history: #95 in FY2021, #43 in FY2022, #75 in FY2023 and #62 in FY2024; up 4 since FY2024.
59	Premier Trading Company, LLC Top agencies Army (Department of the Army)	$90,916	<0.1%	Rank history: #56 in FY2021, not on the FY2022 list, #25 in FY2023 and not on the FY2024 list; returned.
60	Idexx Laboratories Inc. Top agencies Army (Department of the Army)	$87,257	<0.1%	Rank history: #39 in FY2021, not on the FY2022 list, #50 in FY2023 and #41 in FY2024; down 19 since FY2024.
61	San Antonio Lighthouse for the Blind Top agencies DLA (Defense Logistics Agency)	$86,210	<0.1%	Rank history: #34 in FY2021, #55 in FY2022, #38 in FY2023 and #38 in FY2024; down 23 since FY2024.
62	Allied Mineral Products LLC Top agencies Navy (Department of the Navy)	$83,404	<0.1%	Rank history: #88 in FY2021, not on the FY2022 list, #54 in FY2023 and #60 in FY2024; down 2 since FY2024.
63	Wosb Solutions, LLC Top agencies DLA (Defense Logistics Agency)	$82,611	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
64	Martelle Water Treatment, Inc. Top agencies Army (Department of the Army)	$82,540	<0.1%	Rank history: #65 in FY2021, #44 in FY2022, #53 in FY2023 and #66 in FY2024; up 2 since FY2024.
65	Amaya Solutions Inc. Top agencies Navy (Department of the Navy)	$80,550	<0.1%	Rank history: not on the FY2021 list, #70 in FY2022, #55 in FY2023 and #50 in FY2024; down 15 since FY2024.
66	TMG Services, Inc. Top agencies DOI (Department of the Interior)	$70,024	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
67	Daijin Co.,Ltd. Top agencies Navy (Department of the Navy)	$68,015	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
68	K & L Supply, Inc. Top agencies Army (Department of the Army)	$66,297	<0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #47 in FY2024; down 21 since FY2024.
69	Plating International Inc. Top agencies Army (Department of the Army)	$65,453	<0.1%	Rank history: not on the FY2021–FY2022 lists, #36 in FY2023 and #45 in FY2024; down 24 since FY2024.
70	Garratt-Callahan Company Top agencies Army (Department of the Army)	$64,293	<0.1%	Rank history: #40 in FY2021, #64 in FY2022, #42 in FY2023 and #43 in FY2024; down 27 since FY2024.
71	Oshima Shokai Co., Ltd. Top agencies Navy (Department of the Navy)	$59,784	<0.1%	Rank history: not on the FY2021–FY2023 lists and #96 in FY2024; up 25 since FY2024.
72	Bard Aerospace LLC Top agencies DLA (Defense Logistics Agency)	$51,903	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
73	Tattersall Supply, LLC Top agencies USAF (Department of the Air Force) Army (Department of the Army)	$50,664	<0.1%	Rank history: #76 in FY2021, #67 in FY2022, #87 in FY2023 and #52 in FY2024; down 21 since FY2024.
74	Government MLO Supplies USA Inc Top agencies SSA (Social Security Administration)	$47,094	<0.1%	Rank history: not on the FY2021–FY2023 lists and #64 in FY2024; down 10 since FY2024.
75	Albemarle U.s., Inc. Top agencies Navy (Department of the Navy)	$46,800	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
76	The Sherwin-Williams Company Top agencies Navy (Department of the Navy)	$45,094	<0.1%	Rank history: not on the FY2021 list, #76 in FY2022, not on the FY2023 list and #61 in FY2024; down 15 since FY2024.
77	Central Jersey Office Equipment Inc. Top agencies DLA (Defense Logistics Agency)	$43,860	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
78	Gasochem International, Llc. Top agencies Army (Department of the Army)	$42,864	<0.1%	Rank history: #20 in FY2021, #32 in FY2022, #69 in FY2023 and #48 in FY2024; down 30 since FY2024.
79	Snow & Ice Salt & Chemicals Unlimited, LLC Top agencies SSA (Social Security Administration)	$42,283	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	Hubbard-Hall Inc. Top agencies Army (Department of the Army)	$39,522	<0.1%	Rank history: #46 in FY2021, #52 in FY2022, #76 in FY2023 and #55 in FY2024; down 25 since FY2024.
81	Federon Procurement Solutions Top agencies Navy (Department of the Navy)	$35,594	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
82	Aqua-Pure Inc. Top agencies DOI (Department of the Interior)	$34,929	<0.1%	Rank history: #59 in FY2021, #59 in FY2022, #63 in FY2023 and not on the FY2024 list; up 22 since FY2024.
83	Silver Bird Solutions LLC Top agencies DLA (Defense Logistics Agency)	$32,602	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
84	JTF Business Systems Corporation Top agencies DLA (Defense Logistics Agency)	$32,294	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
85	Y & S Technologies Inc. Top agencies DLA (Defense Logistics Agency)	$32,095	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
86	Premier & Companies, Inc. Top agencies DLA (Defense Logistics Agency)	$31,983	<0.1%	Rank history: not on the FY2021 list, #23 in FY2022, #58 in FY2023 and #46 in FY2024; down 40 since FY2024.
87	Ibilola Ogun Top agencies DLA (Defense Logistics Agency)	$29,925	<0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 13 since FY2024.
88	Noah Technologies Corporation of Texas Top agencies Army (Department of the Army)	$28,800	<0.1%	Rank history: not on the FY2021 list, #86 in FY2022, not on the FY2023 list and #86 in FY2024; down 2 since FY2024.
89	Circus Ice Cream Inc. Top agencies Navy (Department of the Navy)	$27,768	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
90	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; new.
91	Paragon One Group LLC Top agencies DLA (Defense Logistics Agency)	$22,835	<0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2024; down 3 since FY2024.
92	Quality Biological Inc. Top agencies HHS (Department of Health and Human Services)	$22,578	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
93	Merelex Corporation Top agencies USUHS (DOD Uniformed Services University of the Health Sciences)	$21,317	<0.1%	Rank history: #60 in FY2021, #61 in FY2022 and not on the FY2023–FY2024 lists; returned.
94	Genesis JIT LLC Top agencies Army (Department of the Army)	$21,177	<0.1%	Rank history: #35 in FY2021, #49 in FY2022 and not on the FY2023–FY2024 lists; returned.
95	Thatcher Group Inc 2 awardees, including Thatcher Company of Montana, Inc. and Thatcher Company, Inc. Top agencies DOI (Department of the Interior)	$19,668	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Pinestar Technology, Inc. Top agencies VA (Department of Veterans Affairs)	$17,953	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
97	Environmental Operating Solutions Inc. Top agencies USAF (Department of the Air Force)	$16,882	<0.1%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2024; down 19 since FY2024.
98	Hittman Transport Services Inc Through Manufacturing Sciences Corporation Top agencies USDA (Department of Agriculture)	$16,444	<0.1%	Rank history: not on the FY2021–FY2024 lists; new.
99	FGC Advisory Group LLC Top agencies DOI (Department of the Interior)	$15,640	<0.1%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2024; down 57 since FY2024.
100	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; new.

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100 of 138 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	$335,317,522	Mid-America Conversion Services, 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 $339 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 2025 ran Oct 1, 2024 – Sep 30, 2025. 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 FY2024. "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 FY2024 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 NAICS 32518 contractors in FY2025?

1. Mid-America Conversion Services, LLC ($112M), 2. BWX Technologies, Inc. ($65.6M), 3. Calca Solutions, LLC ($65.1M), 4. L3Harris Technologies, Inc. ($46.8M), 5. Ezekiel Bahar ($6.29M), 6. Nation Ford Chemical Co ($4.35M), 7. Lonza Walkersville Inc. ($2.91M), 8. Usalco, LLC ($2.88M), 9. Specialized Materials and Chemicals, LLC ($2.87M), 10. Nidaz LLC ($2.32M).

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