Cov ntaub tsis-woven uas tsim nyog rau cov nyom dag feem ntau yog ua los ntawm cov khoom siv polyester (PET), nrog rau qhov hnyav feem ntau ntawm 40 txog 100g / ㎡. Qhov hnyav siab dua, qhov zoo dua qhov muaj zog thiab ruaj khov. Nws tuaj yeem xaiv raws li qhov xwm txheej siv thiab qhov yuav tsum tau ua ntawm hauv pem teb.
