Cov ntawv ntim khoom noj yog cov khoom ntim nrog cov ntawv thiab cov duab los qhia ua cov ntaub ntawv tseem ceeb.Nws yuav tsum tau ua kom tau raws li qhov yuav tsum tau muaj ntawm cov khoom tsis muaj tshuaj lom, roj-resistant, tsis muaj dej tsis zoo thiab noo noo-pov thawj, sealing, thiab lwm yam., thiab cov ntawv siv rau ntim cov khoom noj uas ua tau raws li qhov yuav tsum tau muaj kev nyab xeeb ntawm kev ntim khoom noj.B...
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