Sign Manufacturing (United States) — NAICS 339950

An investor's primer. NAICS (North American Industry Classification System) code 339950 covers companies that make signs and related displays.

1. Overview

Signs are the physical face of nearly every business, road, stadium, and storefront in America — channel letters over a shop door, the illuminated cabinet at a gas station, the digital billboard on the interstate, the video scoreboard in an arena, the stop sign at an intersection. Sign Manufacturing is the industry that fabricates these objects. It is a made-to-order manufacturing business: most output is custom-built to a customer's brand specification, not sold off a shelf.

Why an investor should care: it is a steady, unglamorous, deeply fragmented industry — roughly $14.5 billion in annual receipts spread across more than 5,600 firms, most of them small local shops [1][2]. That fragmentation is the whole story. It means almost no pure-play public stocks (the public route is thin), but a large, active private market of family-owned shops changing hands, plus a growing wave of private-equity "roll-ups" assembling regional shops into national platforms [3]. Layered on top is a genuine structural growth theme: the shift from static painted/printed signs to digital LED (light-emitting diode) displays — billboards, message centers, menu boards, and scoreboards — which raises the dollar value of each sign and adds recurring software and service revenue.

• Public-market ways in: limited. One near-pure-play (Daktronics), one diversified lighting-plus-display maker (LSI Industries), plus supplier and customer proxies. Details in Section 4.
• Private-market ways in: the mainstream route — buying or building a local/regional sign company, buying a franchise, or backing a PE consolidation platform.

2. What it is, and how it's structured

Scope. NAICS 339950 is defined by the U.S. Census Bureau as establishments "primarily engaged in manufacturing signs and related displays of all materials (except printing paper and paperboard signs, notices, displays)" [4]. In plain terms it includes:

• Illuminated and electric signs, neon signs, channel letters, and sign cabinets
• Digital/LED billboards, electronic message centers, and video displays
• Scoreboards and stadium video boards
• Pylon and monument signs, point-of-purchase and counter displays
• Metal, wood, glass, and plastic signs; traffic and street signs
• Sign components and letters [4]

What it excludes (and where those activities live instead):

• Paper and paperboard signs, notices, and die-cut displays → NAICS 322299 (Converted Paper Product Manufacturing) [4]
• Printed advertising material and printed-only banners → NAICS 323111 / 32311 (Printing) [4]
• Sign lettering, painting, and hand-lettering services → NAICS 541890 (Other Services Related to Advertising) [4]
• Operating billboards and selling the ad space on them → NAICS 541850 (Outdoor/Display Advertising). This is a crucial distinction: the big billboard companies (Lamar, OUTFRONT, Clear Channel Outdoor) are customers of sign manufacturers, not members of this industry. They buy the digital display; a manufacturer builds it. See Sections 4 and 6.

Operating models. The industry spans several distinct operating models. A local custom shop surveys a site, develops artwork and structural/electrical drawings, obtains permits, fabricates cabinets or letters, prints or applies graphics, installs the sign and later provides repair or replacement work. Larger national providers add program management: they adapt a brand standard to hundreds of sites, manage differing municipal codes, and use networks of local installers. Electronic-display manufacturers operate more like equipment OEMs — designing LED modules, cabinets, controllers and software, assembling and testing systems, then handling installation, commissioning, monitoring and service [5]. This distinction matters economically: static identification signs and channel letters are usually custom job-shop products, while scoreboards and digital billboards have more manufactured content, engineering and software, but also require field contracting and long-lived service support.

Ownership mix. The industry is overwhelmingly private and owner-operated. It splits into two economic tiers:

1. Product manufacturers — larger companies that design and build digital displays, scoreboards, and standardized sign systems at scale, often through dealer networks (e.g., Daktronics, Watchfire, LSI Industries). A few are public; most are private.
2. Custom fabricator / brand-implementation shops — thousands of local and regional companies that design, build, install, and maintain custom signs, and national players that manage multi-location "image programs" for chains (e.g., YESCO, Federal Heath, Stratus). Almost all private.

At the small end, franchise brands (FASTSIGNS, Signarama, Image360) supply the local retail sign-shop layer.

3. How big it is

Federal figures for NAICS 339950:

The concentration data confirm just how fragmented this is. The four largest firms account for only about 10% of revenue; the top 8, ~15%; the top 20, ~23%; the top 50, ~32% [2]. The Herfindahl-Hirschman Index (HHI, a standard market-concentration measure where regulators treat anything under 1,500 as "unconcentrated") is 45.2 — one of the lowest readings you will see in any industry [2]. This is a textbook long-tail market: thousands of small shops, no dominant player.

The undercount caveat. The federal manufacturing count understates the true footprint of "signage" for three reasons. (1) These figures capture employer manufacturing establishments; thousands of small custom sign, vinyl, and banner shops — plus sole proprietors — are classified under advertising services (541890) or printing (32311), not here. (2) Many state and local Departments of Transportation fabricate traffic signs in-house, so that government output does not show up as commercial manufacturing revenue. (3) Industry sources put the broader "sign, graphics, and visual communications" sector — which bundles design, printing, installation, and service around the manufactured product — at roughly $59 billion in annual activity, far larger than the $14.5 billion manufacturing slice alone [7]. So read the federal number as the manufacturing core, not the whole signage economy.

4. The investable universe

Public companies with direct sign-manufacturing exposure are few, and the pure-ish plays are small caps.

Supplier proxies (huge diversified companies for whom signage is a small slice):

• 3M (MMM) and Avery Dennison (AVY) — the two dominant makers of retroreflective sheeting (the reflective film that makes traffic signs glow in headlights). They sell into traffic-sign fabricators, governed by federal MUTCD standards [11]. Signage is a tiny fraction of each company.

Customer proxies (the demand side, not manufacturers — NAICS 541850):

• Lamar Advertising (LAMR), OUTFRONT Media (OUT), Clear Channel Outdoor (CCO) — the large out-of-home (OOH) advertising operators. Lamar and OUTFRONT are real estate investment trusts (REITs). They are the biggest buyers of digital billboards from manufacturers, so their capital-spending appetite is a demand signal for the industry [12].

Major private and other owners (where most of the industry actually lives):

• YESCO (Young Electric Sign Company) — Salt Lake City; family-owned since 1920; ~1,000 employees; the neon behind much of the Las Vegas Strip; designs, builds, installs, and services custom electric signs and billboards, plus a franchise network [13].
• Watchfire Signs — Danville, IL; founded 1932; LED digital billboards, message centers, and fuel-price signs. Acquired by H.I.G. Capital in 2022; at acquisition, the company reported an installed base exceeding 65,000 LED displays [14].
• Federal Heath Sign Company — founded 1901; national illuminated-signage programs (channel letters, cabinets, pylons, digital) [15].
• Stratus (Stratus Unlimited) — a national brand-implementation platform owned by private-equity firm Vestar Capital Partners; an active consolidator (acquired Priority Sign and Comet Signs, among others) [3][16].
• Coast Sign — design, permitting, manufacturing, nationwide installation and repair for multi-location brands; acquired by CapitalSpring in 2025, illustrating private-equity interest in integrated service platforms [17].
• Other notable private names: Everbrite, Poblocki Sign Company, Philadelphia Sign, Persona, ICON (Identity Group), National Sign Systems, and Canada's Pattison Sign Group.

Bottom line for public-market investors: there is no broad, liquid way to buy "the sign industry" on an exchange. Daktronics is the single best-fit ticker; LSI Industries adds diversified exposure; everything else is either a tiny slice of a giant (3M, Avery Dennison) or a demand proxy (the OOH REITs).

5. How the money works

Sign making is a project-based, made-to-order manufacturing business, and its economics look more like a fabrication/contracting shop than a mass-production factory.

The order-to-revenue cycle. A customer commissions a sign or a display; the shop bids, designs, fabricates, and installs it; revenue is recognized as the project is completed. Because projects span weeks to months, backlog (signed orders not yet delivered) is the key leading indicator of the larger players' health — Daktronics reports it every quarter (year-end FY2025 backlog was $342 million, up 8%) [18]. Watching orders vs. backlog vs. recognized sales tells you where the cycle is heading.

Margins. Gross margins for the big display makers run in the mid-to-high 20s percent (Daktronics reported 27.3% gross margin in FY2026), and operating margins are single digits (7.3% for Daktronics in FY2026) — reflecting material costs, skilled labor, installation, and competitive bidding [5]. The company attributed recent margin improvement to pricing discipline, favorable mix, operating efficiency, volume leverage, and fewer supply-chain disruptions [5]. At the small end, a local sign shop's economics look different: BizBuySell benchmarks show a median sign business at ~$768,000 of revenue with the owner earning ~$190,000 — a healthy owner's take relative to sales, but a tiny absolute enterprise [19]. Owners of these shops are typically bought and sold on a multiple of seller's discretionary earnings (SDE) or EBITDA (earnings before interest, taxes, depreciation, and amortization), commonly in the ~3–5x range [19].

Cost structure and pass-through. The main inputs are aluminum and steel (cabinets, poles, structures), LEDs and electronics (the digital guts), acrylic/polycarbonate, vinyl, and paint, plus labor, freight, and installation. Materials are a large share of cost of goods, and shops try to pass input inflation through in bids — but with fragmented competition, pricing power is limited. Quotes may be fixed before metal, electronics, freight, or subcontractor costs are known; shorter quote validity, escalation clauses, and standardized designs improve resilience [5]. This makes the industry sensitive to steel/aluminum and electronics prices and to tariffs (Section 7).

The recurring-revenue layer (the interesting part). The digital transition is changing the model. Beyond selling the hardware, manufacturers increasingly earn recurring revenue from content-management software, remote monitoring, and multi-year maintenance and image-program contracts for national chains. For custom fabricators serving multi-location brands, that service annuity — LED retrofits, upkeep, rebrand rollouts — is stickier and higher-margin than one-time fabrication, and it is the main reason product companies and roll-ups are moving toward bundled "sign-as-a-service" relationships.

Capacity and cyclicality. Like any fabrication business, profitability depends on keeping the shop and installation crews busy (capacity utilization). Demand is cyclical, tied to customers' capital budgets — so a downturn in construction, retail expansion, or ad spending flows straight through to order books. Electronic manufacturers carry engineering and manufacturing overhead; volume increases can improve fixed-cost absorption, while delayed projects leave capacity underused [5].

6. What drives demand

• Commercial construction and store openings. Every new store, restaurant, bank branch, gas station, hotel, and office needs signage. New-build activity is a primary driver.
• Rebranding and image programs. National retailers, quick-service restaurants (QSRs), banks, and convenience/petroleum brands periodically refresh their look, triggering large multi-location sign-replacement rollouts — steady work independent of new construction.
• The digital conversion (the structural growth engine). The shift from static signs to LED/digital raises the value of each installation and opens the fast-growing digital signage subsegment — estimated at roughly $7–10 billion in the U.S. for 2025–2026 and growing ~7–8% per year, well above the flat-to-low-growth manufacturing average [20]. Digital billboards, electronic message centers, video menu boards, and stadium video walls are all part of this. Daktronics identifies continuing adoption of digital displays, higher resolution, larger display formats, and integrated control software as demand drivers [5].
• Sports and entertainment venue capital spending. New and renovated stadiums and arenas buy large video-display systems — a lumpy but high-value demand source (Daktronics' Live Events segment) [5].
• Transportation and infrastructure. Government spending on intelligent transportation systems (ITS) — dynamic message signs (DMS) on highways, transit displays — is funded by federal infrastructure programs and drives the transportation segment.
• Traffic-sign replacement cycles. Federal retroreflectivity mandates (Section 7) require aging traffic signs to be replaced on a schedule, creating recurring government demand.
• Energy-saving conversions. Retrofits from fluorescent or neon illumination to LEDs can reduce energy and maintenance costs, driving replacement cycles even for signs with years of remaining life [21].
• Advertising-market health. For the digital-billboard segment, the buyers are OOH advertising operators whose capital spending rises and falls with the ad market [12].

7. Regulation

Sign manufacturing itself is lightly regulated, but what can be built and where is heavily regulated — and that regulation directly shapes demand.

• Highway Beautification Act (HBA) of 1965 (23 U.S.C. §131). The core federal law controlling off-premise billboards along the ~306,000 miles of Interstate and federal-aid primary highways. States must maintain "effective control" (limiting billboard size, spacing, and lighting) or risk losing 10% of their federal highway funds; sign removals require just compensation [22][23]. Implementing rules are in 23 CFR Part 750 [24].
• Local zoning and sign ordinances. The real day-to-day constraint. Cities and counties regulate sign size, height, illumination, brightness, and — critically for digital — the minimum "hold" or dwell time between message changes. Electronic displays often face stricter rules than static signs because of aesthetic and driver-safety concerns [5]. These vary enormously by jurisdiction; some communities cap or ban digital billboards outright, and four states (Vermont, Maine, Hawaii, Alaska) ban billboards entirely [23].
• First Amendment case law. Two Supreme Court decisions frame how governments may regulate sign content: Reed v. Town of Gilbert (2015) subjected content-based sign rules to strict scrutiny, and City of Austin v. Reagan National Advertising (2022) held that the on-premise/off-premise distinction is facially content-neutral — together shaping which local rules survive [23].
• Traffic-sign standards. The Federal Highway Administration's MUTCD (Manual on Uniform Traffic Control Devices) and ASTM D4956 set minimum retroreflectivity for public-road signs, driving both the specification and the replacement cadence of government signage [11].
• FCC electromagnetic-interference requirements. Large LED displays must generally comply with FCC Part 15 equipment-authorization procedures, and Wi-Fi or Bluetooth functionality may trigger additional certification. Noncompliance can require remediation or expose the responsible party to enforcement [25].
• Electrical safety. Electric and illuminated signs must be UL-listed (Underwriters Laboratories standard UL 48) and comply with the National Electrical Code — a baseline product-safety requirement.
• Trade policy as a cost regulator. Tariffs function as an input-cost lever: Section 232 duties of 25% on imported steel and aluminum (reimposed/expanded in 2025) hit sign structures directly, and Section 301 tariffs on Chinese LEDs and electronics raise the cost of digital displays [26][27]. Because most commercial LED components are made in China and Southeast Asia, tariff policy meaningfully moves manufacturers' margins.

8. Competitive dynamics and consolidation

The defining feature is extreme fragmentation — CR4 of ~10%, HHI of 45.2, and thousands of firms mostly under a few million dollars in revenue [2]. Competition looks different at each tier:

• Local/regional custom shops compete on relationships, speed, and price in their geography; the very small end is served by franchise systems (FASTSIGNS, Signarama, Image360).
• Product manufacturers (Daktronics, Watchfire, LSI) compete on technology, scale, dealer networks, and software — and increasingly against low-cost Asian LED-display makers that commoditize basic hardware and pressure prices.
• National brand-implementation platforms compete for the multi-location accounts (chains that want one vendor to roll out and maintain signage across hundreds of sites) — a scale game that favors consolidators.

Consolidation is the live theme. A fragmented, cash-generative, founder-owned industry is exactly what private equity looks for, and firms increasingly describe signage as "ripe for consolidation" [16]. Platforms such as Stratus (Vestar Capital), Coast Sign (CapitalSpring), and others are executing roll-ups — buying regional shops to build national footprints that can serve big multi-site customers and layer on recurring service revenue [3][16][17]. Expect continued add-on acquisitions of family-owned shops, with the strategic prize being national coverage plus digital/software capability plus a maintenance annuity.

9. Risks

• Cyclicality. Demand rides commercial construction, retail expansion, venue capex, and ad spending — all discretionary and capital-budget-driven. A recession hits order books quickly.
• Input-cost and tariff volatility. Steel, aluminum, copper, and LED/electronics prices — amplified by trade tariffs — can compress already-thin margins faster than fragmented shops can reprice [5][26][27].
• Import competition and LED price deflation. Cheap Asian display hardware commoditizes the digital segment; rapid LED price declines can erode the value of a manufacturer's core product.
• Customer concentration and retail health. The larger custom players lean on national retail/QSR programs; store closures, retail bankruptcies, or a paused rebrand can remove a big chunk of work at once.
• Regulatory and legal constraints. Local bans, brightness/dwell-time limits, and litigation over digital and off-premise signage can cap the fastest-growing, highest-value product category.
• Skilled-labor shortage. Recruiting and retaining fabricators, installers, licensed electricians, engineers, and technicians is a rising concern — cited by ~42% of sign companies as a top issue in recent industry surveys [15]. The International Sign Association has described workforce availability as an industry-wide problem [28].
• Technology and cybersecurity risk. As displays become networked, unauthorized access can alter public content, disrupt customer operations, or compromise connected networks. Rapid improvements in pixel density and control technology can also shorten economic replacement cycles and create inventory obsolescence [5].
• Thin public options / roll-up execution risk. Public investors have few pure choices; private consolidators carry integration and leverage risk if debt-funded roll-ups outrun the operating synergies.

10. How to invest, and the outlook

Public routes (limited).

• Daktronics (DAKT) is the single closest pure-play — a small-cap bet on digital displays, scoreboards, and digital billboards, where backlog and order growth are the numbers to watch [5][18].
• LSI Industries (LYTS) offers diversified exposure through its growing Display Solutions segment and the Royston acquisition, blended with a lighting business [8][9].
• Supplier angle: 3M (MMM) and Avery Dennison (AVY) for reflective-sheeting exposure, though signage is a rounding error in each [11].
• Demand-side angle: the OOH REITs — Lamar (LAMR), OUTFRONT (OUT), Clear Channel Outdoor (CCO) — are not manufacturers but are the buyers of digital billboards, so they track the same digital-conversion tailwind from the customer side [12].

Private routes (the mainstream).

• Buy or build a shop. The fragmented market means an active business-brokerage pipeline of family-owned sign companies, typically valued around ~3–5x earnings [19] — the classic entry point for an owner-operator or search-fund buyer.
• Franchise. FASTSIGNS, Signarama, and Image360 offer a packaged small-business on-ramp.
• Back a consolidator. Institutional and accredited investors can gain exposure by co-investing in or backing PE roll-up platforms (Stratus, Coast Sign, and similar strategies) assembling national sign networks [3][16][17].

Private diligence considerations. Investors should separate manufactured revenue from pass-through installation and subcontractor revenue; test gross margin by product and customer; examine backlog cancellation terms and margin fade; assess customer and brand-program concentration; normalize owner compensation; quantify service and software recurrence; review warranty history, licensing, and safety records; and determine whether growth requires additional plant capacity, cranes, installation vehicles, or working capital [5][9].

Outlook (forward-looking judgment). Aggregate manufacturing revenue is likely to grow only modestly — roughly flat to low-single-digits — while the digital-signage subsegment remains the clear growth engine at high-single-digit rates as static signs convert to LED and as chains keep refreshing brand imagery [20]. Government infrastructure spending on dynamic message signs and ITS provides a countercyclical floor, and the multi-year rebrand cycles of national retail, QSR, and convenience/petroleum keep the base business turning. Against that, tariff-driven input inflation, cyclicality, and LED-hardware commoditization are the persistent margin headwinds. The most durable value is shifting from one-time fabrication toward recurring software, monitoring, and maintenance revenue, and from standalone local shops toward consolidated national platforms — so the investable story over the next several years is as much about who assembles and services the fragmented middle as about who builds the best sign.

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Sources

1. U.S. Census Bureau, County Business Patterns 2023, NAICS 339950 (establishments, employment, annual payroll). https://www.census.gov/programs-surveys/cbp.html
2. U.S. Census Bureau, 2022 Economic Census — Concentration Ratios / Comparative Statistics, NAICS 339950 (receipts, firm count, CR4/CR8/CR20/CR50, HHI). https://www.census.gov/programs-surveys/economic-census.html
3. PR Newswire / Stratus Unlimited, "Stratus Acquires Priority LLC, formerly Priority Sign," 2024. https://www.prnewswire.com/news-releases/stratus-acquires-priority-llc-formerly-priority-sign-a-provider-of-turnkey-brand-implementation-services-302169659.html
4. IBISWorld, "NAICS Code 339950 – Sign Manufacturing" (industry definition, products, exclusions, cross-references), 2026. https://www.ibisworld.com/classifications/naics/339950/sign-manufacturing/
5. Daktronics, Inc., Form 10-K for fiscal year ended May 3, 2026 (FY2026 net sales $838.7M, gross margin 27.3%, operating margin 7.3%; business model, cost drivers, demand factors, risks). https://www.sec.gov/Archives/edgar/data/915779/000162828026045262/dakt-20260502.htm
6. U.S. Small Business Administration, Table of Size Standards, NAICS 339950 (500-employee standard), 2023. https://www.sba.gov/document/support-table-size-standards
7. Signs of the Times / Sign industry sources, "2024 State of the Sign Industry" (broader sign, graphics & visual-communications sector estimate). https://signsofthetimes.com/2024-state-of-the-sign-industry/
8. LSI Industries Inc., "Reports Fiscal 2025 Results" (revenue $573.4M, +22%; Display Solutions ~40% of sales), BusinessWire / StockAnalysis, 2025. https://stockanalysis.com/stocks/lyts/
9. LSI Industries Inc., "LSI Industries Completes Acquisition of Royston Group" ($325M acquisition; ~$272M trailing revenue, ~$38M adjusted EBITDA, ~14% margin), 2025. https://lsicorp.com/news/lsi-industries-completes-acquisition-of-royston-group/
10. Brady Corporation, Form 10-K for fiscal year ended July 31, 2025 (safety, traffic, and facility signs as part of broader identification portfolio). https://www.sec.gov/Archives/edgar/data/746598/000074659825000045/brc-20250731.htm
11. 3M and Avery Dennison, retroreflective-sheeting product pages; FHWA MUTCD and ASTM D4956 retroreflectivity standards. https://www.3m.com/3M/en_US/p/c/films-sheeting/reflective-sheeting/i/safety/road-safety/
12. Lamar Advertising Co. Form 8-K (FY2024 quarterly revenue); "OUTFRONT and Lamar Outpace Market," Billboard Insider, 2024. https://billboardinsider.com/outfront-and-lamar-outpace-market-in-1q-24/
13. YESCO (Young Electric Sign Company), company history and Wikipedia entry (founded 1920, ~1,000 employees, Salt Lake City). https://en.wikipedia.org/wiki/YESCO
14. H.I.G. Capital, "H.I.G. Capital Completes Acquisition of Watchfire Signs" (2022 acquisition, 65,000+ installed LED displays). https://hig.com/news/h-i-g-capital-completes-acquisition-of-watchfire-signs/
15. International Sign Association / Signs of the Times, "2024 & 2025 State of the Sign Industry" (industry outlook; ~42% cite staffing as top concern). https://signsofthetimes.com/2025-state-of-the-sign-industry/
16. Signs of the Times, "Stratus Acquires Comet Signs" and "The Private Equity 'Paint Job'" (roll-up consolidation trend). https://signsofthetimes.com/stratus-acquires-comet-signs/
17. CapitalSpring, "CapitalSpring Partners with Management to Acquire Coast Sign" (national brand-implementation platform acquisition), 2025. https://www.prweb.com/releases/capitalspring-partners-with-management-to-acquire-coast-sign-302431722.html
18. Daktronics, Inc., "Announces Fiscal Year and Fourth Quarter 2025 Results" (backlog $342M, up 8%), GlobeNewswire, June 2025. https://www.globenewswire.com/news-release/2025/06/25/3104979/10684/en/Daktronics-Inc-Announces-Fiscal-Year-and-Fourth-Quarter-2025-Results.html
19. BizBuySell, "Sign Manufacturing Business Valuation Multiples & Financial Benchmarks" (median revenue ~$768K; owner earnings ~$190K; valuation multiples). https://www.bizbuysell.com/learning-center/valuation-benchmarks/sign-manufacturing/
20. Mordor Intelligence and Grand View Research, "United States Digital Signage Market" (size ~$7–10B for 2025–2026; ~7–8% CAGR). https://www.grandviewresearch.com/industry-analysis/us-digital-signage-market
21. International Sign Association, position statements on LED energy efficiency and retrofits. https://signs.org/codes-regulations/signcodehelp/local/isa-position-statements/
22. Federal Highway Administration, "A History and Overview of the Federal Outdoor Advertising Control Program" (Highway Beautification Act, 23 U.S.C. §131). https://www.fhwa.dot.gov/real_estate/oac/oacprog.cfm
23. Scenic America, "About the Highway Beautification Act" and "Billboard Laws and Regulation" (state bans; Reed v. Gilbert; City of Austin v. Reagan). https://www.scenic.org/why-scenic-conservation/billboards-and-sign-control/hba/
24. Electronic Code of Federal Regulations, 23 CFR Part 750 — Highway Beautification. https://www.ecfr.gov/current/title-23/chapter-I/subchapter-H/part-750
25. International Sign Association, "FCC Digital Sign Compliance" (Part 15 equipment-authorization requirements for LED displays). https://signs.org/codes-regulations/federal-regulations/fcc-digital-sign-compliance/
26. Council on Foreign Relations, "Trump's New Aluminum and Steel Tariffs Explained" (25% Section 232 steel/aluminum tariffs, 2025). https://www.cfr.org/articles/trumps-new-aluminum-and-steel-tariffs-explained-six-charts
27. Keen Technical Solutions, "The Impact of Tariffs on LED Lighting Costs" (Section 301 China tariffs raise LED/electronics input costs). https://www.keentechnicalsolutions.com/keen-technical-solutions/the-impact-of-tariffs-on-led-lighting-costs
28. International Sign Association, "35 Young Professionals Named to ISA Elite Class of 2025" (workforce availability concerns). https://signs.org/industry-news/35-young-professionals-named-to-isa-elite-class-of-2025/