Kev faib khoom ntawm lub tshuab nqus tsev sib sau tshuab yas ntim khoom

Cov khoom ntim khoom ntim khoom ntim feem ntau suav nrog: lub tshuab blister forming, xuas nrig ntaus tshuab, sealing tshuab, tshuab siab zaus, thiab tshuab folding. Kev faib khoom: ntim cov khoom tuaj yeem muab faib ua: ntxig daim npav, daim npav nqus, ob lub hlwv, ib nrab hlwv, ib nrab-fold blister, peb-fold blister, thiab lwm yam.