- Apex Signs
 - Professional design, fabrication, installation and maintenance in the industry. - Bay Bronze Company
- Napa - Makers of cast bronze plaques, cast metal letters, ADA signs, corporate logos, and custom architectural signage.
- Bob Bjorkquist Signs
- Healdsburg - Signs, neon, and T-shirts.
- Percells Signs
- Petaluma - Offering custom and commercial signage
- Prismatic Instant Signs
- Milpitas - Production of signs, banners, and vehicle and window lettering.
- SuperGraphics, Inc.
- Sunnyvale - Specialises in producing photorealistic, self-adhesive vinyl for bus wraps and sign graphics.
- West Coast Signworks
- San Rafael - Full-service sign and banner company providing design, production, and installation of all types of exterior and interior signage for customers in the San Francisco Bay Area.
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