Plastic Mini-cascade Ring:
As the function of bevel edge in its sidepiece, it has not only enhance the mechanical strength, but also breake rotational symmetry of its structure. The aim of to do is to increase directional odds when putting in Tower packing. Meahwhile, to change the way of tangency from linearity contact to point contact and to reduce air circuit resistance. So its peiformance is more excellent that Pall ring.