Siv rau kev sim ua kom tawg lub zog thiab tawg elongation ntawm ib yarn lossis strand xws li cov ntaub ntawv paj rwb, tawv, xaim xov, cladded xov thiab hlau xaim. Cov tshuab no adopts loj screen xim kov cov vijtsam speck ua haujlwm.
