## Common ground
All options are types of advertising signs, signage displays, or display signs used for promoting products, services, or messages.
## Options at a glance
**4911.10 – Printed advertising signs**
- **Defining trait:** Made of paper, cardboard, or printed material; non-digital and static.
- **Typical examples:** Poster ads, cardboard billboards, trade show flyers.
- **Best fit when:** The sign is flat, printed, and not electronic or illuminated.
**8310.00 – Metal wall signs**
- **Defining trait:** Constructed from base metals (e.g., steel, aluminum); typically mounted on walls.
- **Typical examples:** Steel storefront signs, metal nameplates with ads.
- **Best fit when:** The sign is made of metal and used for permanent or semi-permanent wall mounting.
**8528.52 – Digital signage (computer-connected)**
- **Defining trait:** Digital display that can connect directly to a computer for content control.
- **Typical examples:** Interactive kiosks, retail monitors linked to a PC.
- **Best fit when:** The sign is digital and requires direct computer integration.
**8528.59 – Digital signage (not computer-connected)**
- **Defining trait:** Digital display without direct computer connection; often uses pre-loaded content or USB.
- **Typical examples:** Standalone video displays, digital posters with internal memory.
- **Best fit when:** The sign is digital but operates independently of a computer.
**9403 – Floor-standing display signs**
- **Defining trait:** Freestanding structure made from plastic, metal, or wood; used for visibility in public spaces.
- **Typical examples:** Retail product displays, exhibition stands.
- **Best fit when:** The sign is upright and designed to stand on the floor.
**9405.6X – Luminous advertising signs**
- **Defining trait:** Illuminated (backlit or neon-style) for visibility in low light.
- **Typical examples:** Neon signs, LED-lit storefront signs.
- **Best fit when:** The sign emits its own light to attract attention.
## Key differences
| Option | Material | Digital? | Connected? | Illuminated? | Standalone? |
|-------|----------|----------|------------|--------------|-------------|
| 4911.10 | Paper/cardboard | No | N/A | No | Yes |
| 8310.00 | Metal | No | N/A | No | Wall-mounted |
| 8528.52 | Glass/plastic | Yes | Yes | Optional | No |
| 8528.59 | Glass/plastic | Yes | No | Optional | Yes |
| 9403 | Plastic/metal/wood | Varies | N/A | No | Yes |
| 9405.6X | Varies | Varies | N/A | Yes | Yes |
## How to choose
- Is it made of paper, cardboard, or printed material? → 4911.10
- Is it metal and mounted on a wall? → 8310.00
- Is it digital and connects directly to a computer? → 8528.52
- Is it digital but works without a computer? → 8528.59
- Is it freestanding (on the floor)? → 9403
- Is it lit up (neon, LED, backlit)? → 9405.6X
## Overlaps & pitfalls
A sign can be both digital and luminous (e.g., a glowing digital display), or floor-standing and illuminated. If multiple traits apply, prioritize the **main function**: is it primarily for light (→ 9405.6X), digital content (→ 8528.52/59), or physical structure (→ 9403)? No single rule applies—choose based on the product’s defining feature