1. Daim ntawv tsis muaj qhov ci ntsa fluorescent. Cov ntaub so ntswg tsis yog dawb li sai tau. Txhawm rau txhawm rau txhim kho lub ntsej muag dawb ntawm cov khoom, qee cov tuam txhab ua ntau dhau ntawm fluorescent ntxuav hniav dawb tus neeg sawv cev. Cov kws tshaj lij kho mob hauv tebchaws European thiab Asmeskas tau muaj pov thawj dhau los ntawm kev tshawb fawb hais tias lub sijhawm ntev raug fluorescent ntxuav hniav dawb rau ntawm tib neeg daim tawv nqaij yuav ua rau mob cancer. Hais txog qhov tsis zoo ntawm daim ntawv tso zis tso quav tam sim no ntawm kev ua lag luam, cov kws tshaj lij hais kom cov neeg siv khoom noj khoom haus tias thaum yuav khoom, lawv yuav tsum xub saib qhov zoo ntawm cov khoom.
2. Los ntawm qhov pom ntawm cov tswv yim zoo, cov ntaub so dej zoo zoo sib xws nrog cov xim, kev nyiam huv, khaub ncaws zoo, thiab zoo nkauj. Cov nplaim ntawv yog huv, huv si, tsis muaj qhov, thiab cov ntaub hoob nab qis zoo li grey tsaus thiab tsis huv. Cov neeg siv khoom siv tau tuaj yeem kov nws nrog lawv txhais tes kom pom tias daim ntawv tso zis tso quav tau ploj mus ua hmoov, xim lossis txawm tias yog tawv.
3. Cov ntawv tso zis tso quav zoo tshaj plaws yuav tsum muaj 100% nkauj xwb li kua mem tes, txhais tau tias nws yog ua 100% nkauj xwb yeej tsis tau dabtsi ntxiv. Thawj qhov yuav tsum tau saib yog dab tsi feem pua ntawm cov nkauj xwb plawv hniav tau sau rau ntawm lub hnab ntim. Yog tias nws yog 50%, 30% ... tom qab ntawv nws tseem tsis tau paub tias yuav ntxiv dabtsi ntxiv rau daim ntawv. Vim tias lub teb chaws cov qauv tsis sib haum xeeb nyob rau niaj hnub no, cov ntawv rov ua dua tshiab tau lo rau qhov no, yog li ntau ntawm lawv tam sim no muaj kev tsis sib haum.
4. Yog tias koj tsis txhob' tsis xav yuav cov ntawv ntawv uas kim, koj tuaj yeem xav txog cov ntawv ntoo pulp. Nws yog ib txwm muaj rau daim ntawv tso zis tso quav kom muaj nplua nuj hauv 50% cov ntoo pulp. Yog tias koj xav yuav 100% ntoo pulp ntawv, nws yog qhov nyuaj. Cov ntawv mills li niaj zaus yuav tsis siv 100% ntoo ntoo los ua ntawv.
5. Tom ntej no yog ntawv ua los ntawm cov nplawm nplawm. Yog tias koj tsis txhob' t xav yuav nqi kim heev tab sis xav yuav daim ntawv huv huv, koj tsuas tuaj yeem yuav cov ntawv 100% quav hmoov pulp ntawv. Txawm hais tias nws yog 100%, daim ntawv tu tsev tseem yog qhov tsis zoo, Tab sis nws tuaj yeem xyuas kom meej tias yog tias cov ntawv zoo li no tau ua hauv lub Hoobkas txheem, nws yuav tsum tau ntxuav. Qhov tsuas yog qhov tsis zoo yog qhov kev ntxhib los mos ntawm daim ntawv yog tuab heev thiab zoo nkaus li tsis zoo.