1. Comfortable, durable, resistant to ageing, and easy to clean
2. Equipped with a voice transmission device for unimpeded communication and workplace interaction
3. Adjustable pressure-relieving headband accommodates various head shapes, distributing pressure evenly without constriction
4. Dual filter cartridges enable prolonged wear with sustained protection, suitable for diverse operational environments
5. Complies with national standard GB2890-2009, applicable in chemical processing, spray painting, mining, and similar scenarios