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https://www.ciindustry.com/products/high-speed-spiral-door/

High Speed Spiral Door
Invented 30 years ago, Spiral Doors have been further developed ever since. At CI Industry, our High-Speed Spiral Doors operate quietly, run fastly, and are almost wear-free. It could withstand the wind speed of 120km/h.
Types of High Speed Spiral Door
High Speed Spiral Door - Round Track
High Speed Spiral Door - Round Track
The round track of this High Speed Spiral Door ensures smooth operation and quiet performance, making it ideal for environments where noise control is essential.
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High Speed Spiral Door - Oval Track
High Speed Spiral Door - Oval Track
This revolutionary door system of High Speed Spiral Door is designed for ultimate efficiency, featuring an oval track that minimizes door travel distance and maximizes speed.