- Gold Graphics
 - Pacoima - Provides commercial screen printing, production, installation, and fulfillment services. - AAA Flag & Banner
- Manufacturer of large and small format digital and screen printed banners, flags, and signs.
- Classic Letters, Inc.
- Torrance - Custom manufacturer of architectural 3D fabrication, and cut outs.
- Southern Californa Bronze Company
- Distributors of architectural signage including bronze, brass, aluminium, and stainless steel. Products include cast plaques, letters, etched metal, time capsule markers, and more.
- Olympus Enterprises
- Pacoima - Providing banners, mobile billboards and kiosks, inflatables, boat and airship displays, and other advertising.
- Accurate Dial & Nameplate, Inc.
- Glendale - Makers of custom nameplates, plaques, asset tags, and more.
- Karman Ltd Architectural Signs
- Canoga Park - Manufactures and installs custom and standard architectural signs.
- JRS Company Inc.
- Covina - Manufacturer of sign frames and holders.
- Sign Methods
- Signal Hill - Producing custom-designed outdoor signage for businesses.
- H. Toji Companies, The
- Gardena - Manufacturer of signs complying with the Americans with Disabilities Act. Offering wayfinding consulting, graphic design, and installation.
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