yog ob txheej txheej hydrophobic microporous membrane uas ua kom qhuav. tshaj li cov yeeb yaj kiab hydrophilic zoo tib yam nws yooj yim rau dampness.

Engineered rau enduring ob chav dej tsis kam, tshwj xeeb huab cua permeability thiab breathability nyob rau hauv huab cua huab cua, tshwj xeeb tshaj yog thaum nag los nag.