Which technology is used to produce a lighter breathing system for firefighters?

Which technology is used to produce a lighter breathing system for firefighters?

فائر فائٹرز کے لئے ہلکے سانس لینے کا نظام تیار کرنے کے لئے کون سی ٹکنالوجی استعمال کی جاتی ہے؟
Explanation

Self-Contained Breathing Apparatus (SCBA) provides firefighters with a portable air supply.

It uses lightweight materials to ensure ease of movement and safety in hazardous environments.