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PVC yog polyvinyl chloride, uas yog polymerized los ntawm vinyl chloride monomer nyob rau hauv qhov kev txiav txim ntawm peroxide, azo tebchaw thiab lwm yam pib, los yog nyob rau hauv qhov kev txiav txim ntawm lub teeb thiab kub raws li lub dawb radical polymerization mechanism.PVC yog ib qho ntawm lub ntiaj teb loj tshaj plaws-purpo ...Nyeem ntxiv»
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Los ntawm kev qhia nws cov monomer copolymerization rau hauv cov saw tseem ceeb ntawm vinyl chloride, ib qho polymer tshiab uas muaj ob qhov sib txuas monomer, uas yog hu ua copolymer.Lub ntsiab ntau yam thiab cov khoom ntawm copolymer ntawm vinyl chloride thiab lwm yam monomers yog raws li nram no: (1) vinyl chloride vinyl ace ...Nyeem ntxiv»
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PVC yas yog synthesized los ntawm acetylene roj thiab hydrogen chloride, thiab ces polymerized.Thaum ntxov xyoo 1950, nws tau tsim los ntawm acetylene carbide txoj kev, thiab nyob rau hauv lub lig 1950s, nws tig mus rau ethylene oxidation txoj kev nrog txaus raw khoom thiab tus nqi qis;Tam sim no, ntau tshaj 80% ntawm PVC re ...Nyeem ntxiv»
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Lub combustion yam ntxwv ntawm PVC yog tias nws yog ib qho nyuaj rau hlawv, tua tam sim ntawd tom qab tawm hauv hluav taws, cov nplaim yog daj thiab dawb cov pa luam yeeb, thiab cov yas softens thaum hlawv, muab tawm lub irritating tsw ntawm chlorine.Polyvinyl chloride resin yog cov khoom siv ntau yam yas....Nyeem ntxiv»
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PVC yas hais txog kev sib xyaw PVC hauv kev lag luam tshuaj.Lub npe lus Askiv: polyvinyl chloride, lus Askiv lub npe: PVC.Qhov no yog lub ntsiab lus dav siv ntawm PVC.Nws cov xim ntuj yog yellowish translucent thiab ci iab.Lub pob tshab yog zoo dua li ntawm polyethylene thiab polypropylene, thiab wo ...Nyeem ntxiv»
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Lub hom phiaj: Waterproof mobile phone case, mobile phone case with waterproof function, can make dog dig mobile phones waterproof.Txawm nyob hauv dej, koj tuaj yeem thaij duab, dhia hauv Internet thiab mloog nkauj dawb.Muaj ntau lub xov tooj tsis muaj dej tsis zoo ntawm lub khw, uas tuaj yeem qhwv koj ...Nyeem ntxiv»
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Nyob rau hauv xyoo tas los no, raws li kev siv cov xov tooj ntawm tes tau dhau los ua neeg nyiam, thiab cov peev txheej ntawm daim ntawv thov tau dhau los ua ntau thiab ntau dua, cov neeg feem coob tsis tuaj yeem nyob tsis muaj xov tooj ntawm txhua qhov chaw, yog li lub xov tooj txawb lub hnab dej tsis muaj dej tau tshwm sim raws li lub sijhawm xav tau. .Qhov qhib ntawm lub tshuab nqus dej...Nyeem ntxiv»
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Muaj cov ntawv tais ceev tseg uas tuaj yeem pab koj txheeb xyuas cov ntaub ntawv tsis zoo, pab koj kom paub meej cov ntaub ntawv tsis raug cai, pab koj nco qab, thiab khaws cov ntawv xa tawm: txhua txhua ib zaug, lub rooj yuav muaj cov npe khoom, daim coupon. , ntau daim pib, thiab lwm yam yog tias koj yeej c...Nyeem ntxiv»
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Primary Paperboard Materials Hom Paperboard Folding CartonPaperboard, los yog tsuas yog board, yog ib lo lus dav dav, suav nrog ntau yam sib txawv ntawm cov ntawv siv hauv cov ntawv ntim.Daim npav daim npav kuj tseem siv tau zoo ib yam, xa mus rau cov ntawv ntawv dav dav lossis cov ntawv thaub qab rau kev nruj ...Nyeem ntxiv»
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Thaum peb tsuas muaj ob peb lub hlis tshuav ntawm 2021, lub xyoo tau coj txog qee qhov kev nthuav dav hauv kev lag luam ntim khoom.Nrog rau kev lag luam e-lag luam txuas ntxiv los ua tus neeg siv khoom nyiam, kev txhim kho thev naus laus zis thiab kev ruaj khov txuas ntxiv yog qhov tseem ceeb, kev lag luam ntim khoom tau ua tiav ...Nyeem ntxiv»
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Plaub lub ntsiab lus tseem ceeb uas yuav ua rau lub neej yav tom ntej ntawm kev ntim khoom rau 2028 Lub Neej Yav Tom Ntej ntawm Ntim: Lub Sijhawm Lub Sijhawm Kev Ua Haujlwm Zoo Tshaj Plaws rau 2028, ntawm 2018 thiab 2028 lub lag luam ntim thoob ntiaj teb tau npaj kom nthuav dav yuav luag 3% toj ib xyoo, ncav cuag ntau dua $ 1.2 trillion.Kev lag luam ntim thoob ntiaj teb tau nce 6.8% ...Nyeem ntxiv»
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Cov txiaj ntsig ntawm Kev Siv Cov Khoom Siv Yas Ntim Cov Hnab Yas Ntim tso cai rau peb los tiv thaiv, khaws cia, khaws cia thiab thauj cov khoom hauv ntau txoj kev.Yog tsis muaj cov ntim yas, ntau cov khoom lag luam uas cov neeg siv khoom yuav tsis ua rau txoj kev mus rau hauv tsev lossis khw, lossis muaj sia nyob hauv qhov zoo lo...Nyeem ntxiv»