Signwell Cov Khoom Siv Zoo Tshaj Plaws Pob tshab nplaum ci ntsa iab txias lamination zaj duab xis
Signwell Cov Khoom Siv Zoo Tshaj Plaws Pob tshab nplaum ci ntsa iab txias lamination zaj duab xis
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| Nta: 1. Cov pov thawj noo noo 2. Tsis muaj dej tsis nkag, kua qaub thiab alkali tsis kam, hluav taws tsis kam 3. Tiv thaiv xeb, tiv thaiv UV, tiv thaiv khawb, tiv thaiv daim duab los ntawm kev ua qias tuaj 4. Zoo tagnrho rau kev siv sab hauv thiab sab nraud ntawm cov chaw tiaj tus 5. Tus nqi zoo heev / kev ua tau zoo piv 6. Siv tau dav rau ntau hom nto 7. Kev qhia tawm duab ci ntsa iab
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| Daim Ntawv Thov: 1. Kev tiv thaiv cov cim qhia sab nraum zoov 2. Kev tshaj tawm ib ntus thiab kev tshaj tawm muag khoom 3. Cov duab kos ntawm lub tsheb, cov duab kos ntawm phab ntsa qhov rai/iav 4. Cov ntawv teev npe, daim ntawv qhia, daim ntawv pov thawj, cov ntaub ntawv hauv chaw ua haujlwm, cov ntawv qhia zaub mov, cov cim cim
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