Hauv kev ua lag luam, tsis muaj leej twg tuaj yeem tiv taus qhov kev sim siab ntawm cov khoom zoo thiab tus nqi qis.Qhov no yog qhov tseeb ntawm qhov tsis sib xws, tab sis hmoov zoo peb tuaj yeem muab cov lus qub qub no coj los siv, kom cov neeg siv khoom tuaj yeem tau txais qhov zoo tiag tiag thiab tus nqi qis.khoom.Vim peb xyuam xim rau txhua yam uas cuam tshuam rau tus nqi.Los ntawm kev txhim kho kev txawj ntse, kev txhim kho cov cuab yeej, thiab kev txhim kho kev tswj hwm, peb ua kom muaj kev sib xyaw zoo ntawm tus nqi thiab zoo.Tsis muaj tus nqi siab dua, tsuas yog tus nqi siab dua thiab kev pabcuam zoo dua.
Kev ua tau zoo yog qhov tseem ceeb ntawm kev tsav tsheb rau peb cov kev ua tiav, thiab qhov tseem ceeb lav rau kev ntseeg siab ntawm cov neeg siv khoom.Txij li thaum tsim, peb tau ua raws li kev tswj hwm nruj tshaj plaws los tswj qhov chaw tsim khoom xws li cov khoom siv raw, cov cuab yeej tsim khoom, cov txheej txheem tsim khoom, kev tshuaj xyuas cov khoom tiav, ntim thiab kev thauj mus los.Rau cov khoom xa tawm, peb yuav nruj me ntsis ua raws li kev lag luam thoob ntiaj teb thiab cov qauv hauv cheeb tsam rau kev tsim khoom thiab kev tswj hwm.Peb cov qauv yog: ASTM, CE FRI, thiab lwm yam
