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Kraft daim ntawv hnab yog ntau thiab ntau siv nyob rau hauv kev ua lag luam nyob rau hauv lub ntim kev lag luam uas ntsuab ib puag ncig tiv thaiv yog ntau thiab ntau zaus hais.Nyob rau hauv lub neej txhua hnub, lub ntim ntawm cov ntaub ntawv kraft tuaj yeem pom nyob txhua qhov chaw, xws li cov khoom siv tes tuav muag los ntawm cov neeg muag khoom, hnab kas fes taum hauv khw muag khoom, kas fes hmoov hnab nrog Wojin qhov cua valve, melon noob hnab, thiab lwm yam.
Nyob rau niaj hnub no tus qauv "tiv thaiv yas", kraft ntawv hnab yog nyiam los ntawm ntau thiab ntau kev lag luam thiab kev lag luam, thiab lawv tau pib hloov cov hnab ntim yas.
1. Kev ua haujlwm ib puag ncig ntawm kraft ntawv hnab yog tus yuam sij rau lawv txoj kev siv dav.Hauv kev lag luam ntim khoom uas them nyiaj ntau dua thiab ntau xim rau ntsuab, txawm hais tias muaj ntau cov ntaub ntawv ntim cov hnab yas hloov tau raws li tsib yam tshuaj lom thiab tsis qab, kraft ntawv kuj muaj qhov zoo ntawm cov tsis muaj kuab paug thiab rov ua dua tshiab.
2. Ntxiv rau qhov kev tiv thaiv ib puag ncig ntawm kraft ntawv hnab, nws cov ntawv luam tawm thiab kev ua haujlwm kuj zoo heev.Lub hnab ntawv kraft nws tus kheej tau muab faib ua dawb kraft ntawv hnab thiab daj kraft ntawv hnab.Nws tsis xav tau kev luam ntawv puv.Cov kab yooj yim tuaj yeem siv los qhia txog qhov zoo nkauj ntawm cov khoom qauv thaum luam ntawv, thiab cov nyhuv ntim ntawm lub hnab ntawv kraft yog zoo dua li cov hnab ntim khoom zoo tib yam..Kev luam ntawv zoo heev txo cov nqi luam ntawv ntawm kraft ntawv hnab, nrog rau lub voj voog ntawm ntim ntau lawm