Mitundu yatsopano yazinthu zopanda madzi zimakhala ndi ntchito zambiri zotsutsana ndi渗透率、madzi-proofness,热稳定性ndi低温katundu mphamvu zazikulu ndi kutalika komanso kukhala ndi khalidwe la kukana kukalamba, zimagwiritsidwa ntchito kwambiri popanga madzi pomanga denga la mafakitale ndi zomangamanga, pansi,缺席,尼昂加人yopangira,等等。