1, the use of different: large hyperbaric chamber is usually a professional medical institutions use equipment, while small oxygen is home or personal use of equipment.
2, the technology is different: large hyperbaric chamber usually use hyperbaric oxygen technology, pressure and oxygen concentration are higher than small oxygen.
3, the operation is different: large hyperbaric chamber usually need professional medical personnel to operate and monitor, while small oxygen can be operated by individuals.
4, the capacity of different sizes: large hyperbaric chamber can accommodate more than one person, while the small oxygen can only be used by one person.