1. Have proper washing ability, have a certain service life;
2. With easy to clear and remove the filter residue ability, it is best to repeatedly use repeatedly;
3. Must have certain chemical stability, corrosion resistance and heat resistance;
4 must be porous, with the ability to intercept particles;
5. With more economical filtration efficiency and effectiveness;
6 has sufficient mechanical strength and dimensional stability;
It is impossible to make all the filtering data fit the above conditions. Regarding different filtering objects, different filtering devices and different technological conditions are adopted to stop the objective selection of the above conditions.
(Addtime：2017-11-14)
