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1.wood pulp air filter paper use for filter air of passenger car, the grammage is 135g/m2, 2.the quality is high and stable - details see: https://www.machineto.com/air-and-oil-filter-paper-10220593

NPA1003PA (Air filter paper of passenger car)

Grammage	135	g/m2
Thickness	0.51	mm
Air permeability	330	mm/s
Max pore size	72	μm
Mean pore size	60	μm

Attention:we also can produce filter papers as your samples after testing them in our lab.

Any questions,please contact us as soon as possible,we will give you prompt attention.With the mission of producing the best filter papers,we are sure we can make our customers more success.We will create the miracle together!