Lub tshuab no feem ntau yog siv rau kev txiav ntawm cov ntaub ntawv puv lossis ib nrab txiav, cov ntawv ntim hluav taws xob hauv hluav taws xob, cov ntawv nplaum, roj hmab thiab lwm cov khoom siv hluav taws xob. Nws yog cov khoom siv me me tshwj xeeb tsim los ua cov ntawv nplaum, cov ntawv xov tooj ntawm tes, cov ntawv nplaum, duab, thiab lwm yam.