●Technics：Non-adhesive type,fluffy,shrink
●Technics：be able to do spray glue type,closed,durable. 
●Surface waterproof treatment.
●Low initial resistance.
●Economic and practical type.
●Air conditioning and air ventilation system interception filtration.
●Primary foldable type, flat filter, filter raw material.
●Air supply system, prefiltration of Air duct Filtration.
●The use of full-volume clipping slice, the use of frame, a single film covering tuyere.
●Put to use of elastic and broken polyester ( PET ).After processing and carding, fiber the network isgradually encrypted and made by heating andhot air pressing and fusion process.
●The dust can be cleaned up by simple tapping and back blowing, and continue to be used; （3 times）
●Is capable of general solvents, weak acidity and weak alkalinity.