Feature: Zoo huab cua permeability, Tsawg rhiab heev, Lub teeb, nyias, yooj yim los tsim kua muag, tsis muaj kua nplaum coated, tsis stickiness
Siv: Raws li kev ua kis las daim kab xev, qhwv daim txhuam cev ua ntej siv cov kab xev kis las, tsis txhob kis kab mob nrog daim tawv nqaij ncaj qha, kev puas tsuaj rau cov plaub hau.