Oxygen concentrator Sunlight oxygen concentrator applied to high-technology of pressure-swing absorption, separated directly and taken out oxygen, which need no raw material exclude electricity power. Meanwhile, most of components be selected to the international brand product in order to ensure its operating life. In the controllable systemf+s device, it give full play to technology advantage between usa and china, can apply for different sea levelf+s requirement, and also can add display and timing of oxygen purity according to the clientf+s different requirement. Sunlight oxygen concentrator applied to high-technology of pressure-swing absorption, separated directly and taken out oxygen, which need no raw material exclude electricity power. Meanwhile, most of components be selected to the international brand product in order to ensure its operating life. In the controllable systemf+s device, it give full play to technology advantage between usa and china, can apply for different sea levelf+s requirement, and also can add display and timing of oxygen purity according to the clientf+s different requirement.