Lub tshuab sealing yog hais txog cov cuab yeej siv tshuab uas kaw lub thawv ntim tom qab nws ntim cov khoom. Muaj ntau yam khoom siv los ua cov thawv ntim khoom, xws li ntawv, yas, iav, ceramics, hlau, cov ntaub ntawv sib xyaw, thiab lwm yam. Cov duab thiab lub cev ntawm cov ntim ntim kuj txawv.
Lub tshuab sealing yog cov cuab yeej siv tshuab uas ntim cov thawv ntim khoom. Tom qab cov khoom raug thauj mus rau hauv cov thawv ntim khoom, txhawm rau txhawm rau ntim thiab khaws cov khoom, tswj cov khoom zoo, thiab zam cov khoom poob, nws yog ib qho tsim nyog yuav tsum tau ntim cov ntim. Txoj haujlwm no ua tiav los ntawm lub tshuab sealing.
