Kev xaiv cov ntaub pua tsev rau koj tus menyuam yog qhov kev txiav txim siab tseem ceeb uas tuaj yeem cuam tshuam loj rau lawv txoj kev nplij siab, kev nyab xeeb, thiab kev noj qab haus huv tag nrho.Thaum xaiv cov ntaub pua plag rau menyuam yaus, muaj ntau yam yuav tsum xav txog, nrog rau cov khoom siv, thickness, thiab tsim.Hauv tsab xov xwm no ...
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