Zomwe zimachitika chifukwa cha formaldehyde yaulere yomwe imapangidwa panthawi yofufuta idanenedwa ndi opanga zikopa ndi makasitomala zaka zoposa khumi zapitazo. Komabe, m’zaka zaposachedwapa nkhaniyi yakhala ikuonedwa mozama kwambiri ndi anthu ofufuta zikopa.
Kwa zikopa zazikulu ndi zazing'ono, kuyang'ana kwakhala kukusintha pakuyesa zaulere za formaldehyde. Okonza zikopa ena amayesa gulu lililonse la zikopa zawo zomwe zangopangidwa kumene kuti zitsimikizire kuti zomwe akugulitsa zikuyenda bwino.
Kwa anthu ambiri ogulitsa zikopa, kuzindikira momwe angachepetsere zomwe zili mu chikopa cha formaldehyde zafotokozedwa momveka bwino——
Ma amino utomoni wowotcha ma resin omwe amaimiridwa makamaka ndi melamine ndi dicyandiamide, ndizomwe zimayambitsa kutulutsa kwa free formaldehyde popanga zikopa komanso kutulutsa kosalekeza kwa formaldehyde muzolemba zachikopa. Chifukwa chake ngati zinthu za utomoni wa amino ndi zotsatira zaulere za formaldehyde zomwe zimabweretsa zitha kuwongoleredwa mokwanira, zoyesa zaulere za formaldehyde zitha kuwongoleredwa bwino. Titha kunena kuti zopangidwa ndi amino resin ndizomwe zimayambitsa zovuta zaulere za formaldehyde panthawi yopanga zikopa.
Lingaliro lakhala likupanga kuyesa kutulutsa utomoni wa amino wa formaldehyde ndi utomoni wa amino wopanda formaldehyde. Zosintha zokhudzana ndi zomwe zili mu formaldehyde ndi magwiridwe antchito a zowotchera zimayang'aniridwa mosalekeza.
Ndi kudzikundikira kwa nthawi yayitali kwa chidziwitso, zochitika, zatsopano, kafukufuku ndi chitukuko. Pakadali pano, kapangidwe kathu kopanda formaldehyde ndi kokwanira. Zogulitsa zathu zakhala zikupeza zotsatira zabwino, pokhudzana ndi kukwaniritsa zofuna za 'zero formaldehyde' komanso kulemeretsa ndi kuwongolera magwiridwe antchito a zowotcha.
Imathandizira kupanga mbewu zowoneka bwino komanso zowoneka bwino zokhala ndi utoto wowala
Imathandiza kupanga mbewu zonse komanso zolimba
Perekani chidzalo, kufewa ndi kupirira kwa chikopa
Amapereka mbewu zolimba kwambiri komanso zabwino kwambiri zokhala ndi zida zazikulu zodaya.
Amapereka mbewu zolimba komanso zolimba
Monga bizinesi yodalirika tidzanyamula izi ngati udindo wathu ndikugwira ntchito molimbika komanso mosasunthika kuti tikwaniritse cholinga chomaliza.
Onani zambiri