* Cov vuas tuaj yeem sib txawv ntawm qhov loj me, qhov hnyav, xim, qauv, veining, kev ntxhib los mos, durability, ntom, nto thiab tiav los ntawm batch mus rau batch.Slip kev ntaus nqi ua ib qho kev qhia thiab yuav txawv rau txhua pawg ntawm cov vuas.Nws raug nquahu kom ua ib qho kev sim tshiab rau txhua pawg ntawm cov vuas yog tias yuav tsum tau ua daim ntawv pov thawj daim ntawv pov thawj.Cov dluab ntawm cov khoom uas tau qhia yog rau kev piav qhia nkaus xwb thiab tsis yog ib qho piv txwv tseeb ntawm cov khoom.
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NTSE 05
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