* Porosity 35% * Pore size 1 ㎛ , 0.1㎛ , 0.07㎛ , 5~50㎚ * Out Diameter 5, 8, 10, 12, 15, 25, 45㎜ * Length < 500 ㎜

* Porosity 35 ~ 40% * Pore size 0.1㎛ , 35~40 ㎛ * Out Diameter