## Common ground
All options describe portable bidets or toilets made from different materials.
## Options at a glance
**3922.90 – Plastic material**
- **Defining trait:** Lightweight, flexible, and commonly used for mass-produced, disposable or foldable models.
- **Typical examples:** Folding travel bidets, compact bathroom wipes holders, plastic toilet seats.
- **Best fit when:** Portability, low cost, and ease of storage are priorities.
**4016.99 – Rubber**
- **Defining trait:** Flexible, waterproof, and often used in soft, collapsible or seal-based components.
- **Typical examples:** Rubber shower seats, inflatable toilet inserts, flexible bidet nozzles.
- **Best fit when:** The product relies on elasticity, sealing, or softness (e.g., for comfort or compact storage).
**6911.90 – Porcelain or china**
- **Defining trait:** Hard, durable, and traditionally used in permanent bathroom fixtures; rare in portable versions.
- **Typical examples:** Miniature porcelain toilets, small ceramic bidet basins (rarely portable).
- **Best fit when:** The product mimics traditional toilet design with high durability and aesthetic appeal.
**6912.00 – Ceramic**
- **Defining trait:** Similar to porcelain but may include non-vitreous or semi-vitreous types; used in durable, glazed fixtures.
- **Typical examples:** Small ceramic bidet cups, decorative toilet inserts.
- **Best fit when:** The product has a glazed, high-quality finish and is intended for long-term use.
**7017 – Glass**
- **Defining trait:** Transparent, non-porous, and often used in premium or hygiene-focused designs.
- **Typical examples:** Clear glass bidet seats, transparent toilet inserts.
- **Best fit when:** Aesthetic transparency, easy cleaning, or high-end design is key.
## Key differences
| Option | Material Type | Durability | Portability | Common Use Case |
|-------|----------------|------------|--------------|------------------|
| 3922.90 | Plastic | Low to medium | High | Travel, disposable use |
| 4016.99 | Rubber | Medium | Very high | Seals, soft parts, inflatable models |
| 6911.90 | Porcelain | High | Low | Traditional-style, durable units |
| 6912.00 | Ceramic | High | Low | Glazed, premium fixtures |
| 7017 | Glass | Medium | Medium | Hygiene-focused, transparent design |
## How to choose
- Is the product made of flexible or inflatable material? → 4016.99
- Is it lightweight and designed for travel or storage? → 3922.90
- Does it have a glazed, hard surface like traditional toilets? → 6911.90 or 6912.00
- Is it transparent or made of glass-like material? → 7017
## Overlaps & pitfalls
- Porcelain (6911.90) and ceramic (6912.00) are closely related; porcelain is a type of ceramic, but in trade, they’re separated. Use 6911.90 for vitreous china, 6912.00 for other ceramics.
- Plastic (3922.90) may be mistaken for rubber if flexible, but rubber is more elastic and waterproof.
- Glass (7017) is rare in portable toilets; confirm transparency and material integrity.
- If multiple materials are used, prioritize the **main structural or defining material**