By insulation properties:
1. Anti-static: Surface resistance between 10⁶ and 10⁹ ohms.
2. Conductive: Surface resistance below 10⁶ ohms.
3. Insulating: Surface resistance above 10¹² ohms.
By material composition:
1. Wood-based: Made from wood or bamboo; typically used for displaying handicrafts or as decorative items.
2. Metal: Usually made of stainless steel; primarily used for holding items in a fixed location rather than for frequent transport.
3. Plastic: Lightweight, convenient to use, and slip-resistant; widely used in the service industry.
4. Wood-plastic composite: Made from wood-plastic composite materials; versatile, energy-efficient, and eco-friendly.
