Product Info: FOCUS ON R & D, Production and sales of oxygen machine, nebulizer, breathing, such as the field of breathing medical devices. Owgels has a professional R & D team, a modern production base, a perfect product supply chain and service system, forming an integrated pattern of R & D, manufacturing, sales and service, the annual sales of oxygen machine 200,000 units, we are the industry leader in production scale and product quality, and provide innovative healthcare solutions to customers in many countries and regions Our oxygen machine have CE,FDA. We also can give bulk price if you want buy more.