The tiny particles can be inbreathe by the patients Piston-type Nebulizer Metal alloy oil-free reciprocating compressor,High-tech self-lubricating copper alloy compressor cylinder,Plastic alloy piston,The most efficient aerosol delivery system on the market.Durable,sporty design-these portable nebulizers are litht weight-only 2.5kgs! Unique pressure chamber provides powerful perfomance,Nebulizes ...