Introducing our factory-price professional oxygen machine! Our factory is proud to supply high-quality oxygen machines that are adjustable from 1-7L, and come with an LED screen for easy use. Our machines are produced at our professional factory, ensuring that they are made with precise attention to detail, durability, and reliability. This oxygen machine is perfect for individuals who need additional oxygen support, including those suffering from respiratory issues such as COPD, asthma, or pneumonia. It's easy to use, can be adjusted to your specific needs, and is designed to provide consistent and reliable oxygen supply. Plus, with our factory-direct pricing, you can rest assured that you won't find a better deal anywhere else!