The air regeneration device series products can achieve dual functions of absorbing carbon dioxide and releasing oxygen, providing oxygen supply while reducing the concentration of carbon dioxide in enclosed spaces. pretend It does not require external energy input, has a small size, is easy to open, has high absorption efficiency, a large oxygen release capacity, and strong environmental adaptability. The product serves as a closed space oxygen source or backup oxygen source in different forms, and is currently mainly used in underground bunker spaces, civil defense engineering, coal mines, and refuge tunnels Enclosed places with limited power resources such as rooms.