Coj koj kom nkag siab txog txoj kev txhim kho tam sim no ntawm kev lag luam kho vajtse.

Cov khoom siv kho vajtse xa mus rau cov txheej txheem thiab cov khoom siv tau ua tiav siv nyob rau hauv lub neej txhua hnub thiab kev lag luam tsim khoom. Nyob rau hauv lub hnub thaum ntxov, lawv feem ntau yog ua los ntawm cov hlau xws li kub, nyiaj, tooj, hlau thiab lincent lub npe. Tam sim no, ntxiv rau ntau cov ntaub ntawv hlau, cov ntaub ntawv tsis yog hlau xws li yas thiab cov fiberglass tseem siv dav. Raws li "daim ntawv txheeb xyuas ntawm kev tsim kho kev txhim kho thiab kev npaj peev ntawm Tuam Tshoj cov khoom lag luam kho vajtse kev lag luam tau kev lag luam sai tau dhau los thawm xyoo. Feem ntau hais lus, cov khoom siv kho vajtse ua haujlwm tau ua haujlwm zoo, nrog kev loj hlob hauv kev loj hlob thiab kev txhim kho neeg txawv teb chaws muaj kev lag luam hauv kev lag luam hauv ntau yam nyiaj txiag hauv kev lag luam. Kev lag luam ib qho tag nrho tsuas yog rov qab mus rau theem ua ntej kev teeb meem nyiaj txiag.