Geomembrane tu'ufa'atasi (composite anti-seepage membrane) ua vaevaeina i le tasi ie ma le tasi membrane ma le lua ie ma le tasi membrane, ma le lautele o le 4-6m, o le mamafa o le 200-1500g / sikuea mita, ma faʻataʻitaʻiga faʻatinoga faaletino ma masini e pei o le malosi mālosi, tete'e loimata, ma pa. Maualuluga, o le oloa ei ai uiga o le malosi maualuga, lelei elongation faatinoga, tele deformation modulus, acid ma alkali tetee, corrosion tetee, matua tetee, ma le lelei impermeability. E mafai ona faʻafetaui manaʻoga o galuega faʻainisinia lautele e pei o le faʻasao vai, pulega faʻapitonuʻu, fausiaina, felauaiga, alalaupapa, tunnels, fausiaina o inisinia, anti-seepage, vavaeeseina, faʻamalosia, ma le faʻamalosia o le anti-crack. E masani ona faʻaaogaina mo le anti-seepage togafitiga o dams ma alavai alavai, ma anti-pollution togafitiga o lapisi lapisi.