1. This product uses entire cotton and kapok absorbent gauze to purify for the raw material becomes, gauze density (latitude and longitude) or =9 root /cm. 2. This product quality of material soft, thickness is even, wears comfortably, easy to operate. 3. This product applicable scope: Production life and so on factory and mining enterprise, medical health unit, environmental sanitation department as well as family each aspect, usually uses in the health protection, but also may use in the spring winter season windproof, the cold-resistance. 4. This product application method: Before the use carries on the inspection to this product, and adjusts according to individual facial features the mouthpiece scallop suits up to. This product may ordinary use many times, but must clean seasons the disinfection. The special request suggested the disposable use, or selects the disinfection level special-purpose mouthpiece. 5. This product guards against moistly in the storage time planted agent, guards against the mouse insect, guards against the pollution, and laying aside dryly ventilating place. 6. This product uses the hygienic transparent plastic bag sealed package, has certainly certainly is moisture-proof, guards against the pollution the function, the packing damages strictly prohibits selling the use Company: Yancheng Hua Kang Medical Service Thing co., ltd.