(1)  A New Generation of PVA Sponge

▪ No material blockage, smooth drainage

▪ No starch residue, no yellowing, no mildew

(2)  More Effective Sucking Disc

▪ Structure design based on fluid dynamics, reducing blockrisk.

▪ Ensure even distribution of negative pressure to every outercavity, which can be monitored real-time.

(3) Biocompatible Polymer SemipermeableMembrane

▪ Betterisolation from bacteria.

▪ Hypoallergenic and non-irritant.

▪ More air permeability and more comfortable.