Please allow me to introduce more about our factroy We professonally make products such as Oxygens mask, Nebulizer Mask , No-rebreathing oxygen mask , Oxygen Cannalu etc. We have CE certificate for our products and we mainly export our products to Europe market So you can trust our quality, also you can rely on our competitve price Because from the raw materials to the finished products, we do them in our own factory.This will give you significant advantage in the market. Attachment is the factory picture of our factory and some of the oxygen products Please check it out