Top 100 Contractors in NAICS 32519: Other Basic Organic Chemical Manufacturing, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 32519: Other Basic Organic 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 56% of NAICS 32519 contract dollars from July 2025 through June 2026

Contract obligations: $22,761,757 Net of deobligations, by contracts coded NAICS 32519 or a code under it
Contractors: 118 Parent companies with an obligation
Largest contractor: Monument Chemical Houston LLC $3.98 million, 17.1% of obligations
Data as of: Oct 16, 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	Monument Chemical Houston LLC Top agencies DLA (Defense Logistics Agency)	$3,981,250	17.1%	Rank history: not on the FY2021–FY2024 lists and #1 in FY2025; up 10 since Jul 2024–Jun 2025.
2	Tangram Chemical LLC Top agencies Navy (Department of the Navy)	$2,325,040	10.0%	Rank history: #5 in FY2021, #4 in FY2022, #2 in FY2023, #11 in FY2024 and #5 in FY2025; up 4 since Jul 2024–Jun 2025.
3	City Chemical LLC Top agencies Navy (Department of the Navy)	$1,563,128	6.7%	Rank history: #4 in FY2021, #6 in FY2022, #4 in FY2023, #4 in FY2024 and #2 in FY2025; down 1 since Jul 2024–Jun 2025.
4	Polyrheo USA Inc. Top agencies Navy (Department of the Navy)	$910,060	3.9%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
5	Maryland Chemical Company, Inc. Top agencies Navy (Department of the Navy)	$780,435	3.4%	Rank history: not on the FY2021 list, #51 in FY2022, #16 in FY2023, #3 in FY2024 and #7 in FY2025; down 1 since Jul 2024–Jun 2025.
6	Momar, Incorporated Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$743,050	3.2%	Rank history: not on the FY2021 list, #11 in FY2022, #10 in FY2023, #9 in FY2024 and #21 in FY2025; up 20 since Jul 2024–Jun 2025.
7	Island Pyrochemical Industries Corp Top agencies Army (Department of the Army)	$683,456	2.9%	Rank history: #38 in FY2021, not on the FY2022 list, #18 in FY2023, #8 in FY2024 and #13 in FY2025; up 7 since Jul 2024–Jun 2025.
8	Dynasty Chemical Corp Top agencies Army (Department of the Army)	$682,209	2.9%	Rank history: not on the FY2021–FY2023 lists, #14 in FY2024 and #8 in FY2025; unchanged since Jul 2024–Jun 2025.
9	Oerlikon Metco US Inc. Top agencies USAF (Department of the Air Force)	$663,060	2.8%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #22 in FY2025; up 8 since Jul 2024–Jun 2025.
10	Scentry Biologicals, Inc. Top agencies USDA (Department of Agriculture)	$653,000	2.8%	Rank history: not on the FY2021 list, #24 in FY2022, #11 in FY2023, #20 in FY2024 and #23 in FY2025; new, not ranked in Jul 2024–Jun 2025.
11	Chem-Trade International Inc. Top agencies Navy (Department of the Navy)	$597,900	2.6%	Rank history: not on the FY2021 list, #17 in FY2022, not on the FY2023–FY2024 lists and #18 in FY2025; new, not ranked in Jul 2024–Jun 2025.
12	Pacific Star Corporation Top agencies Navy (Department of the Navy)	$516,397	2.2%	Rank history: not on the FY2021–FY2023 lists, #54 in FY2024 and #30 in FY2025; up 36 since Jul 2024–Jun 2025.
13	Arxada LLC Top agencies Treasury (Department of the Treasury)	$440,748	1.9%	Rank history: not on the FY2021–FY2024 lists and #9 in FY2025; up 7 since Jul 2024–Jun 2025.
14	Madison Chemical Co Inc. Top agencies Treasury (Department of the Treasury)	$420,000	1.8%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
15	Powder Alloy Corporation Top agencies USAF (Department of the Air Force)	$377,475	1.6%	Rank history: #13 in FY2021, #58 in FY2022, #12 in FY2023, #10 in FY2024 and #27 in FY2025; up 8 since Jul 2024–Jun 2025.
16	Seco Group, LLC Top agencies Navy (Department of the Navy) Treasury (Department of the Treasury)	$353,686	1.5%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #17 in FY2025; up 6 since Jul 2024–Jun 2025.
17	Incon Industries, Inc. Top agencies Navy (Department of the Navy)	$342,900	1.5%	Rank history: not on the FY2021–FY2023 lists, #25 in FY2024 and not on the FY2025 list; up 11 since Jul 2024–Jun 2025.
18	KAP Technochem Usa, Inc. Top agencies Army (Department of the Army)	$304,143	1.3%	Rank history: #8 in FY2021, #41 in FY2022, #7 in FY2023, not on the FY2024 list and #24 in FY2025; up 9 since Jul 2024–Jun 2025.
19	Ordnance Technology Service, Inc. Top agencies Navy (Department of the Navy)	$290,364	1.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
20	Government Scientific Source Inc. Top agencies HHS (Department of Health and Human Services)	$277,661	1.2%	Rank history: #7 in FY2021, #13 in FY2022, #5 in FY2023, #12 in FY2024 and #16 in FY2025; down 5 since Jul 2024–Jun 2025.
21	Cayman Chemical Co Inc. Top agencies DOJ (Department of Justice) DHA (Defense Health Agency)	$260,695	1.1%	Rank history: #9 in FY2021, #18 in FY2022, #14 in FY2023, #19 in FY2024 and #38 in FY2025; up 9 since Jul 2024–Jun 2025.
22	Polydyne Inc. Top agencies Army (Department of the Army)	$248,400	1.1%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #25 in FY2025; up 22 since Jul 2024–Jun 2025.
23	High Valley Products, Inc. Top agencies USAF (Department of the Air Force)	$247,997	1.1%	Rank history: not on the FY2021–FY2024 lists and #10 in FY2025; down 2 since Jul 2024–Jun 2025.
24	Elbit Systems of America LLC Through Sparton Aydin, LLC Top agencies Navy (Department of the Navy)	$244,958	1.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
25	Polysciences Inc. Top agencies Navy (Department of the Navy)	$244,950	1.1%	Rank history: not on the FY2021–FY2024 lists and #26 in FY2025; new, not ranked in Jul 2024–Jun 2025.
26	General Atomics Through General Atomics International Services Corp Top agencies USAF (Department of the Air Force)	$233,700	1.0%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; up 3 since Jul 2024–Jun 2025.
27	3M Technical Ceramics Quapaw, LLC Top agencies Navy (Department of the Navy)	$228,375	1.0%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
28	Cyclope Bio SL Top agencies HHS (Department of Health and Human Services)	$220,000	0.9%	Rank history: not on the FY2021–FY2023 lists, #42 in FY2024 and #36 in FY2025; up 21 since Jul 2024–Jun 2025.
29	Richman Chemical, Inc. Top agencies Navy (Department of the Navy)	$197,060	0.8%	Rank history: not on the FY2021 list, #80 in FY2022, #49 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
30	TECH Service Solutions LLC Top agencies Army (Department of the Army) Treasury (Department of the Treasury)	$183,461	0.8%	Rank history: not on the FY2021 list, #42 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
31	Thermo Fisher Scientific Inc. 2 awardees, including Life Technologies Corporation and Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$163,839	0.7%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023, #30 in FY2024 and #14 in FY2025; down 15 since Jul 2024–Jun 2025.
32	AQW Inc. Top agencies DLA (Defense Logistics Agency)	$158,760	0.7%	Rank history: #40 in FY2021, #27 in FY2022, #34 in FY2023, #60 in FY2024 and #34 in FY2025; up 2 since Jul 2024–Jun 2025.
33	Premier Trading Company, LLC Top agencies Army (Department of the Army)	$156,864	0.7%	Rank history: not on the FY2021–FY2022 lists, #20 in FY2023, #16 in FY2024 and #64 in FY2025; up 36 since Jul 2024–Jun 2025.
34	MDF Technologies Inc. Top agencies Navy (Department of the Navy)	$156,000	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
35	Perfected Solutions LLC Top agencies Army (Department of the Army)	$153,500	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
36	Nonlethal Technologies, Inc. Top agencies DOS (Department of State)	$142,552	0.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
37	Sae Manufacturing Specialties Corp. Top agencies Army (Department of the Army) Navy (Department of the Navy)	$129,386	0.6%	Rank history: not on the FY2021–FY2024 lists and #31 in FY2025; down 5 since Jul 2024–Jun 2025.
38	Linde Inc. Through Linde Advanced Material Technologies Inc. Top agencies USAF (Department of the Air Force)	$127,639	0.5%	Rank history: not on the FY2021–FY2023 lists, #47 in FY2024 and #41 in FY2025; down 7 since Jul 2024–Jun 2025.
39	Allclear Aerospace & Defense, Inc. Top agencies Navy (Department of the Navy)	$122,432	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	Garratt-Callahan Company Top agencies VA (Department of Veterans Affairs)	$121,495	0.5%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
41	Fuchs Lubricants Co. Top agencies Army (Department of the Army)	$120,861	0.5%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #49 in FY2025; up 52 since Jul 2024–Jun 2025.
42	Frontier Electronic Systems Corp Top agencies Navy (Department of the Navy)	$117,095	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
43	Teledyne Flir Defense, LLC Top agencies DOT (Department of Transportation)	$116,515	0.5%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; up 59 since Jul 2024–Jun 2025.
44	EP Scientific Products LLC Top agencies DOI (Department of the Interior)	$101,477	0.4%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023, not on the FY2024 list and #40 in FY2025; down 3 since Jul 2024–Jun 2025.
45	Cambridge Isotope Laboratories Inc. Top agencies HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$95,680	0.4%	Rank history: not on the FY2021–FY2023 lists, #46 in FY2024 and #42 in FY2025; up 66 since Jul 2024–Jun 2025.
46	Osung Enterprise Top agencies USAF (Department of the Air Force)	$93,136	0.4%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
47	Chemeon Surface Technology, LLC Top agencies Army (Department of the Army)	$85,960	0.4%	Rank history: #23 in FY2021, not on the FY2022–FY2023 lists, #52 in FY2024 and not on the FY2025 list; up 8 since Jul 2024–Jun 2025.
48	Cameron Energy Services Corp. Top agencies Navy (Department of the Navy)	$84,120	0.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
49	Cerilliant Corporation 2 awardees Top agencies DHA (Defense Health Agency)	$82,967	0.4%	Rank history: not on the FY2021–FY2023 lists, #22 in FY2024 and #37 in FY2025; down 3 since Jul 2024–Jun 2025.
50	Warner Graham LLLP Top agencies HHS (Department of Health and Human Services)	$74,244	0.3%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and #48 in FY2025; up 55 since Jul 2024–Jun 2025.
51	K.r. Campbell, Inc. Top agencies Navy (Department of the Navy)	$72,675	0.3%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Unity Global Trading LLC Top agencies Navy (Department of the Navy)	$69,300	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
53	Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services) DOI (Department of the Interior)	$68,122	0.3%	Rank history: not on the FY2021–FY2023 lists, #70 in FY2024 and #59 in FY2025; up 32 since Jul 2024–Jun 2025.
54	American Chemical and Equipment, Inc. Top agencies Army (Department of the Army)	$67,056	0.3%	Rank history: #77 in FY2021, not on the FY2022–FY2023 lists, #50 in FY2024 and #76 in FY2025; up 24 since Jul 2024–Jun 2025.
55	RCG of North Carolina, LLC Top agencies Navy (Department of the Navy)	$62,834	0.3%	Rank history: not on the FY2021–FY2024 lists and #53 in FY2025; up 9 since Jul 2024–Jun 2025.
56	VHG Labs Inc. Top agencies Navy (Department of the Navy)	$61,514	0.3%	Rank history: not on the FY2021–FY2023 lists, #48 in FY2024 and #55 in FY2025; up 74 since Jul 2024–Jun 2025.
57	Saint-Gobain Advanced Ceramics LLC Through Saint-Gobain Ceramics & Plastics, Inc. Top agencies USAF (Department of the Air Force)	$57,940	0.2%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 14 since Jul 2024–Jun 2025.
58	Veterans Elite Inc Top agencies VA (Department of Veterans Affairs)	$41,000	0.2%	Rank history: not on the FY2021–FY2022 lists, #45 in FY2023, #56 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
59	Knudsen Systems Inc. Top agencies Navy (Department of the Navy)	$40,348	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
60	Karebay Biochem Inc. Top agencies HHS (Department of Health and Human Services)	$38,600	0.2%	Rank history: not on the FY2021 list, #98 in FY2022, #44 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
61	10X Genomics, Inc. Top agencies VA (Department of Veterans Affairs)	$37,975	0.2%	Rank history: #74 in FY2021, #29 in FY2022, not on the FY2023 list, #38 in FY2024 and #58 in FY2025; down 18 since Jul 2024–Jun 2025.
62	Patz Materials and Technologies LLC Top agencies NASA (National Aeronautics and Space Administration)	$36,694	0.2%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; new, not ranked in Jul 2024–Jun 2025.
63	Professional Finishing Systems & Supplies, Inc. Top agencies Treasury (Department of the Treasury)	$35,457	0.2%	Rank history: #97 in FY2021, not on the FY2022 list, #73 in FY2023, #88 in FY2024 and #66 in FY2025; up 26 since Jul 2024–Jun 2025.
64	Stateline Solution LLC Top agencies USAF (Department of the Air Force)	$34,860	0.1%	Rank history: not on the FY2021–FY2024 lists and #61 in FY2025; new, not ranked in Jul 2024–Jun 2025.
65	Phigenics LLC Top agencies DHA (Defense Health Agency)	$34,678	0.1%	Rank history: not on the FY2021–FY2023 lists, #64 in FY2024 and #62 in FY2025; up 1 since Jul 2024–Jun 2025.
66	International Chemstar Incorporated Top agencies DLA (Defense Logistics Agency)	$31,382	0.1%	Rank history: not on the FY2021–FY2022 lists, #57 in FY2023, #66 in FY2024 and #65 in FY2025; up 2 since Jul 2024–Jun 2025.
67	W R Systems Ltd. Top agencies Navy (Department of the Navy)	$31,344	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
68	American Tokyo Kasei, Inc. Top agencies USDA (Department of Agriculture)	$29,190	0.1%	Rank history: #46 in FY2021, #61 in FY2022, #40 in FY2023, #53 in FY2024 and not on the FY2025 list; down 5 since Jul 2024–Jun 2025.
69	Seneca Mineral Company Top agencies USAF (Department of the Air Force)	$26,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #64 in FY2023, not on the FY2024 list and #70 in FY2025; up 5 since Jul 2024–Jun 2025.
70	Thermo Fisher Scientific Chemicals, Inc. Top agencies Navy (Department of the Navy)	$25,742	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
71	Alpha Scents Inc. Top agencies USDA (Department of Agriculture)	$25,200	0.1%	Rank history: not on the FY2021–FY2024 lists and #72 in FY2025; new, not ranked in Jul 2024–Jun 2025.
72	It Vision Networks Inc. Top agencies Army (Department of the Army)	$25,102	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Environmental Resource Associates, Inc. Top agencies EPA (Environmental Protection Agency)	$24,276	0.1%	Rank history: not on the FY2021–FY2025 lists; up 39 since Jul 2024–Jun 2025.
74	Snow & Ice Salt & Chemicals Unlimited, LLC Top agencies Army (Department of the Army)	$24,012	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; new, not ranked in Jul 2024–Jun 2025.
75	Arhab LLC Top agencies Army (Department of the Army)	$23,080	0.1%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #75 in FY2025; down 13 since Jul 2024–Jun 2025.
76	Miles Ahead Distribution, Inc. Top agencies Treasury (Department of the Treasury)	$21,560	0.1%	Rank history: #53 in FY2021, #57 in FY2022, #15 in FY2023, #27 in FY2024 and #50 in FY2025; down 34 since Jul 2024–Jun 2025.
77	Chemceed, LLC Top agencies Treasury (Department of the Treasury)	$20,600	0.1%	Rank history: not on the FY2021 list, #97 in FY2022, #100 in FY2023, #89 in FY2024 and #79 in FY2025; new, not ranked in Jul 2024–Jun 2025.
78	In Speck Corp Top agencies Navy (Department of the Navy)	$20,385	0.1%	Rank history: not on the FY2021–FY2025 lists; up 57 since Jul 2024–Jun 2025.
79	Critical Communications, Controls and Instruments, LLC Top agencies Navy (Department of the Navy)	$19,976	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
80	Environmental Operating Solutions Inc. Top agencies USAF (Department of the Air Force)	$18,597	0.1%	Rank history: #81 in FY2021, #71 in FY2022, #62 in FY2023, #93 in FY2024 and #83 in FY2025; up 20 since Jul 2024–Jun 2025.
81	Cenmed Enterprises Inc. Top agencies DLA (Defense Logistics Agency)	$17,940	0.1%	Rank history: not on the FY2021–FY2025 lists; up 34 since Jul 2024–Jun 2025.
82	NCH Corporation Top agencies Treasury (Department of the Treasury)	$16,682	0.1%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023, #90 in FY2024 and #88 in FY2025; up 42 since Jul 2024–Jun 2025.
83	Novandi Chemistry AB Top agencies HHS (Department of Health and Human Services)	$16,650	0.1%	Rank history: not on the FY2021 list, #72 in FY2022, #88 in FY2023, not on the FY2024 list and #89 in FY2025; new, not ranked in Jul 2024–Jun 2025.
84	Rochester Midland Corporation Top agencies HHS (Department of Health and Human Services)	$14,978	0.1%	Rank history: not on the FY2021–FY2024 lists and #92 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	Janels Industries Inc. Top agencies DLA (Defense Logistics Agency)	$14,620	0.1%	Rank history: not on the FY2021–FY2022 lists, #67 in FY2023, not on the FY2024 list and #96 in FY2025; up 14 since Jul 2024–Jun 2025.
86	Gasochem International, Llc. Top agencies USDA (Department of Agriculture)	$14,000	0.1%	Rank history: #37 in FY2021, #52 in FY2022, #31 in FY2023, #18 in FY2024 and #20 in FY2025; down 77 since Jul 2024–Jun 2025.
87	Chemsystems Inc. Top agencies VA (Department of Veterans Affairs)	$13,296	0.1%	Rank history: not on the FY2021–FY2023 lists, #94 in FY2024 and not on the FY2025 list; up 27 since Jul 2024–Jun 2025.
88	Ruptured Duck LLC Top agencies DLA (Defense Logistics Agency)	$11,760	0.1%	Rank history: not on the FY2021 list, #37 in FY2022, #79 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
89	Kratos Microwave, Inc. Top agencies Navy (Department of the Navy)	$10,992	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	Kpaul Properties LLC Top agencies Navy (Department of the Navy)	$10,408	<0.1%	Rank history: not on the FY2021 list, #92 in FY2022, not on the FY2023–FY2024 lists and #87 in FY2025; up 31 since Jul 2024–Jun 2025.
91	Danaher Corporation Through Integrated DNA Technologies, Inc. Top agencies HHS (Department of Health and Human Services)	$10,216	<0.1%	Rank history: #2 in FY2021, #3 in FY2022, #6 in FY2023, not on the FY2024 list and #80 in FY2025; new, not ranked in Jul 2024–Jun 2025.
92	Cool Air Mechanical Inc. Top agencies Commerce (Department of Commerce)	$9,470	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
93	C & D Equipment Company, Inc. Top agencies DLA (Defense Logistics Agency)	$8,575	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
94	Adirondack Electronics Inc. Top agencies Navy (Department of the Navy)	$6,230	<0.1%	Rank history: #67 in FY2021, not on the FY2022–FY2023 lists, #65 in FY2024 and not on the FY2025 list; down 14 since Jul 2024–Jun 2025.
95	Konecranes Nuclear Equipment & Services, LLC Top agencies Navy (Department of the Navy)	$5,980	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
96	General Nuclear Corp Top agencies Navy (Department of the Navy)	$5,820	<0.1%	Rank history: not on the FY2021–FY2024 lists and #100 in FY2025; up 8 since Jul 2024–Jun 2025.
97	Reade International Corp Top agencies Navy (Department of the Navy)	$5,267	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
98	Aquaphoenix Scientific, LLC Top agencies Navy (Department of the Navy)	$4,692	<0.1%	Rank history: #34 in FY2021, #95 in FY2022, #29 in FY2023, #72 in FY2024 and #39 in FY2025; down 61 since Jul 2024–Jun 2025.
99	Greater Maryland Tool & Mfg. Corp. Top agencies Navy (Department of the Navy)	$4,375	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
100	Sabre Systems, LLC Top agencies DOJ (Department of Justice)	$3,550	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.

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100 of 118 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 32519

Code	Net obligations	Largest contractor
325199 All Other Basic Organic Chemical Manufacturing	$22,685,673	Monument Chemical Houston 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 $23.3 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.
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 32519 contractors in Jul 2025–Jun 2026?

1. Monument Chemical Houston LLC ($3.98M), 2. Tangram Chemical LLC ($2.33M), 3. City Chemical LLC ($1.56M), 4. Polyrheo USA Inc. ($910K), 5. Maryland Chemical Company, Inc. ($780K), 6. Momar, Incorporated ($743K), 7. Island Pyrochemical Industries Corp ($683K), 8. Dynasty Chemical Corp ($682K), 9. Oerlikon Metco US Inc. ($663K), 10. Scentry Biologicals, Inc. ($653K).

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