Mapepala a PC
Wallis
| Mtundu: | |
|---|---|
| Makulidwe: | |
| Kugwiritsa Ntchito: | |
| Ubwino: | |
| Mtundu Wosindikiza: | |
| Kupezeka: | |
| Kuchuluka: | |
Tsamba la Wallis lopanda fulorosenti loyera la polycarbonate losindikizira inkjet ndi gawo losindikizidwa la PC lopangidwa kuti lizigwiritsidwa ntchito zomwe zimafunikira maziko oyera okhazikika, kutulutsa kolondola kwazithunzi, kukana kwambiri komanso magawo omaliza olimba. Ndizoyenera kusindikiza kwaukatswiri, zikwangwani, mapanelo owonetsera, zokutira zithunzi, zida zotsatsira komanso mapulojekiti osindikiza amakampani.
Mosiyana ndi magawo oyera omwe amakhala ndi zoyera za fulorosenti, kalasi yoyera ya PC yopanda fulorosenti idapangidwa kuti ichepetse kusintha kwamitundu yokhudzana ndi fulorosenti pansi pamikhalidwe yosiyanasiyana yowunikira. Izi zimathandiza osindikiza ndi otembenuza kuti azitha kuwunika mitundu yodziwikiratu, makamaka pamapulojekiti omwe mawonekedwe oyera osasinthasintha ndi mitundu yosindikizidwa ndiyofunikira.
Chidziwitso chokhazikika chazinthu chimakwirira pafupifupi 0.2 mm mpaka 0.5 mm makulidwe . makulidwe makonda, pepala kukula, chikhalidwe pamwamba ndi ma CD akhoza kukambidwa molingana ndi chosindikizira inkjet, umagwirira inki, mbali yosindikiza, mitsinje mitsinje nsalu ndi mapeto ntchito zofunika.
| Tsatanetsatane | |
|---|---|
| Zogulitsa | Mapepala Oyera a Polycarbonate Osakhala Fluorescent Osindikizira Inkjet |
| Zakuthupi | Polycarbonate (PC) |
| Mtundu | Zoyera zopanda fulorosenti |
| Kunenepa Kwambiri | Pafupifupi 0.2-0.5 mm; makonda malinga ndi chitsimikiziro cha kupanga |
| Ntchito Yosindikiza | Kusindikiza kwa inkjet; chosindikizira, inki ndi kuyanjana kwapamwamba ziyenera kutsimikiziridwa musanapange zambiri |
| Pamwamba | Pamwamba posindikizidwa; makonda pamwamba zofunika zikhoza kukambidwa |
| Mechanical Property | Kukana kwakukulu kwa polycarbonate; zenizeni zimadalira giredi |
| Kukaniza Chinyezi | PC gawo lapansi limapereka kukana kwabwino kwa madzi; kulimba kwa chithunzi chosindikizidwa kumadalira inki yosankhidwa ndi makina opaka |
| UV / Njira Yakunja | Ntchito zakunja kapena zosagwirizana ndi UV ziyenera kufotokozedwa ndi kalasi ndikutsimikiziridwa ndi zomangamanga zonse zosindikizidwa |
| Kukaniza Chemical | Zimatengera mtundu wa mankhwala, ndende, nthawi yowonetsera, kalasi ya PC ndi malo osindikizidwa; kuyezetsa ntchito kumalimbikitsidwa |
| Ntchito Zofananira | Zikwangwani, zosindikizidwa, mapanelo azithunzi, zithunzi zotsatsira, zokutira ndi zida zosindikizidwa makonda |
| Kusintha mwamakonda | Makulidwe, miyeso, zofunika pamwamba, ma CD zoteteza ndi OEM specifications |
Zosindikiza: Ntchito yosindikiza imatengera mawonekedwe a PC, chithandizo cholandirira inki, ukadaulo wosindikizira, chemistry ya inki, machiritso ndi kukonza kwapansi. Ogula akuyenera kuyesa zitsanzo zoyimilira pogwiritsa ntchito chosindikizira chawo chenicheni ndi inki asanapange malonda.
Mapepala Oyera a PC Opanda Fluorescent a Inkjet Printing
Magawo ena apulasitiki oyera amagwiritsa ntchito kuwala kwa fulorosenti kuti apange choyera chowoneka bwino pansi pamikhalidwe ina. Zotsatirazi zimatha kukhudza momwe gawo lapansi limawonekera pansi pa zowunikira zambiri za ultraviolet ndipo zitha kukhudzanso kuwunika kwamitundu.
Tsamba loyera la PC lopanda fulorosenti limapangidwa kuti lizigwiritsidwa ntchito pomwe ogula amakonda gawo loyera loyang'aniridwa popanda yankho lamphamvu la fulorosenti. Izi zitha kukhala zamtengo wapatali pamapulojekiti osindikizira omwe amafunikira mawonekedwe obwerezabwereza, mtundu wokhazikika wakumbuyo komanso kufananitsa kowoneka bwino kwa zithunzi zosindikizidwa pansi pamitundu yowunikira.
Mu kusindikiza kwa inkjet, gawo lapansili ndi gawo la mawonekedwe omaliza. Mthunzi woyera, gloss, opacity, mawonekedwe a pamwamba ndi fluorescence amatha kukhudza mtundu wosindikizidwa. Kugwiritsa ntchito gawo lapansi loyera la PC motero kumathandiza osindikiza kuwongolera pomwe amawonekera pazithunzi, zolemba ndi mtundu.
Chogulitsachi ndi gawo lapansi loyera la polycarbonate osati pepala lowonekera bwino. Cholinga chake ndi kupereka maziko olimba osindikizira oyera. Pama projekiti omwe amafunikira zithunzi zowonekera, kusindikiza mobwerera kapena kuwunikiranso, ogula akuyenera kufotokoza giredi ya PC yomveka bwino kapena yowoneka bwino m'malo mwake.
Polycarbonate imasankhidwa kwambiri kuti ikhale ndi zida zosindikizidwa chifukwa champhamvu yake. Poyerekeza ndi zithunzi zokhala ndi mapepala ndi magawo ambiri osasunthika, pepala lopyapyala la PC ndiloyenera kugwiritsa ntchito zomwe zimatha kugwiridwa pafupipafupi, kupsinjika kwa kukhazikitsa kapena kulumikizana ndi makina.
Malo oyera opanda fulorosenti amapereka maziko okhazikika amitundu yosindikizidwa, zolemba zabwino, zithunzi, logos, ma QR code ndi zina zowoneka. Izi ndizothandiza makamaka pamene kusinthasintha kwa mtundu wa gawo lapansi ndi gawo lazovomerezeka zopanga.
PC imapereka bata laling'ono loyenera kutembenuza mwatsatanetsatane komanso magawo osindikizidwa. Izi zitha kuthandiza panthawi yolembetsa, kudula kufa, kukhomerera, kupukuta ndi kusonkhana pamene kuwongolera kolimba kumafunika.
Kutengera mtundu wa PC ndi makulidwe, polycarbonate imatha kudulidwa, kudula kufa, kukhomeredwa, kupindika, kupendekera kapena kusinthidwa kukhala zithunzi zomalizidwa ndi zigawo zamakampani. Njira iliyonse yokhudzana ndi kutentha, kupindika molimba kapena zomatira mwamphamvu ziyenera kuyesedwa pa zomangamanga zosindikizidwa poyamba.
Mosiyana ndi magawo a mapepala, polycarbonate sadalira ulusi wamapepala kuti upangike bwino. Izi zimapangitsa PC kukhala yothandiza pomwe gawo lapansi limatha kukumana ndi chinyezi kapena kuwonekera kwamadzi nthawi zina. Kukhalitsa kwa chithunzi chosindikizidwa palokha, komabe, kumadalira inki, zokutira ndi dongosolo lomaliza.
Polycarbonate imagwiritsidwa ntchito kwambiri pazinthu zomwe zimafuna kutentha kwambiri kuposa mapulasitiki ambiri osindikizira. Malire enieni ogwirira ntchito amadalira giredi, makulidwe, katundu, njira yosindikizira ndi kapangidwe kagawo komaliza ndipo ziyenera kutsimikiziridwa kuchokera ku data yogwira ntchito.

Chigawo Chokhazikika cha Polycarbonate Chosindikizira Katswiri
Kusiyanitsa kumodzi kofunikira pakati pa pepala la PC lopangidwa ndi cholinga chambiri ndi pepala losindikizidwa la polycarbonate ndikulumikizana kwapamtunda ndi inki yomwe ikufuna. Pepala lolimba silimatsimikizira kuti inki inyowetsedwa kapena kumamatira.
Mukapempha zitsanzo, perekani chitsanzo chosindikizira, mtundu wa inki ndi njira yochiritsira ngati n'kotheka. Mitundu yosiyanasiyana yotengera madzi, zosungunulira, zochilitsidwa ndi UV kapena makina ena a inki yadijito amatha kuchita mosiyana pamawonekedwe a polycarbonate.
Unikani kumamatira kwa inki mutatha kuyanika kwathunthu kapena kuchiritsa pogwiritsa ntchito njira yoyesera ya wogula. Ngati PC yosindikizidwa idzadulidwa, kupindika, kudulidwa kapena kuwululidwa kuti iyeretsedwe, kuyesa kumamatira pambuyo pa ntchitozo.
Sindikizani tchati chamtundu weniweni, mitundu yamtundu kapena chithunzi chaumboni papepala la PC. Unikani mtundu pansi pa mikhalidwe yowunikira yomwe imagwiritsidwa ntchito kuti ivomerezedwe bwino. Zinthu zoyera zopanda fulorosenti zingathandize kupereka maziko olamuliridwa, koma kulondola kwamtundu komaliza kumatengera mbiri yosindikiza, kachulukidwe ka inki ndi kasamalidwe ka mtundu.
Kutentha kwambiri kapena kuwonekera kwa UV kumatha kukhudza magawo a polima kapena zigawo zosindikizidwa. Tsatirani malingaliro a inki ndi chosindikizira ndikutsimikizira kuti mawonekedwe a PC amakhalabe ovomerezeka atachiritsidwa.
Ngati PC yosindikizidwa idzakhala laminated, yomangirizidwa, kudula kufa kapena kusonkhanitsidwa ku chinthu china, kuyesa pepala losindikizidwa lokha losatembenuzidwa sikokwanira. Tsimikizirani njira yonse yopangira kuti muzindikire zomatira, kusweka, mtundu, mankhwala kapena zowoneka bwino musanapange zambiri.
Tsamba la PC losindikizidwa loyera litha kugwiritsidwa ntchito ngati zikwangwani zamkati, zithunzi zozindikiritsa, zikwangwani ndi mapanelo ena osindikizidwa omwe amafunikira kulimba kwambiri kuposa mapepala kapena bolodi lopepuka. Pazikwangwani zakunja kwanthawi yayitali, tchulani giredi ya PC yoyenera panja ndi makina osindikizira okhazikika a UV ndikutsimikizira zomangira zomaliza.
Zowonetsera zamalonda, zojambula zowonetsera, mapepala a chidziwitso cha mankhwala ndi zipangizo zogulira zimapindula ndi kuphatikiza kwa maziko osindikizira oyera, zomangamanga zapulasitiki zokhazikika ndi zojambula zojambulidwa.
PC yosindikizidwa imatha kuganiziridwa ngati zithunzi za zida, zolemba zowongolera, mapanelo ozindikiritsa, zithunzi zophunzitsira ndi zida zina zamafakitale. Kukwanira kwenikweni kumatengera kutentha komwe kumafunikira, kukhudzana ndi mankhwala, ma abrasion, machitidwe amoto ndi momwe amayendera.
Mapanelo otsatsira, mawonedwe odziwika, zithunzi zowonetsera ndi zidutswa zosindikizidwa zomwe zitha kugwiritsa ntchito PC yoyera yopanda fulorosenti pomwe kuwonetsa kolondola komanso gawo lokhazikika ndikofunikira.
Pazopaka zosankhidwa zamtengo wapatali, mabokosi owonetsera ndi zida zosindikizira zokhazikika, pepala lopyapyala la PC litha kupereka malo osindikiza olimba. Kusankha kwazinthu kuyenera kuganizira kupindika, kudula kufa, kulumikiza, kumamatira kwa inki, kapangidwe ka phukusi ndi zofunikira pakuwongolera.
Kutengera ndi zomangamanga zomwe zimafunikira, PC yosindikiza imatha kusinthidwa kukhala zokutira, zolemba, mapanelo a zida ndi zida zosindikizira zomwe zimafunikira kukana komanso kukhazikika kwa mawonekedwe.
Kusindikiza Mwamakonda Pamapepala Oyera a Polycarbonate
| Factor | White PC Mapepala | PVC Mapepala | PET / PETG | Paper Board |
|---|---|---|---|---|
| Impact Magwiridwe | Ubwino waukulu wa PC | Odalira kalasi | Zabwino kutengera kapangidwe | Nthawi zambiri m'munsi |
| Mbiri Yoyera | Njira yoyera yopanda fulorosenti | Magiredi oyera angapo alipo | Magiredi oyera alipo | Kusankha kwakukulu kwa pepala loyera |
| Kukaniza Chinyezi | Zabwino kukana kwa gawo lapansi | Zabwino | Zabwino | Zimatengera kwambiri ❖ kuyanika |
| Kutentha Kukhoza | Nthawi zambiri amasankhidwa kuti azifuna kutentha kwambiri | Odalira kalasi | Zimatengera PET / PETG kapangidwe | Zochepa poyerekeza ndi mapulasitiki a engineering |
| Maziko Osankha Bwino Kwambiri | Mtundu wosindikiza, kuyanjana kwa inki, kulimba, makulidwe, kupanga kunsi kwa mtsinje, kukhudzana ndi chilengedwe, mtengo ndi kugwiritsa ntchito komaliza | |||
Polycarbonate si gawo lapansi labwino kwambiri pantchito iliyonse yosindikiza. PVC, PET, PETG, akiliriki, mapepala ndi mapanelo gulu akhoza aliyense kukhala oyenera kwambiri malinga ndi mtengo, rigidity, kupanga zofunika, ngakhale chosindikizira, kukhudzana panja ndi zinthu utumiki. White PC ndiyothandiza makamaka pakafunika kulimba kwambiri komanso ntchito ya engineering-pulasitiki.
Uzani Wallis wopanga chosindikizira, mtundu wa chosindikizira ndi makina a inki ngati kuli kotheka. Izi ndizothandiza kuposa kungonena 'kusindikiza kwa inkjet' chifukwa makina osindikizira a digito amafunikira machitidwe osiyanasiyana.
Muyezo wamakono wamakono ndi pafupifupi 0.2-0.5 mm. Sankhani makulidwe kutengera kuuma kofunikira, khalidwe lopindika, njira yodulira, kapangidwe komaliza ndi kuthekera kodyetsa chosindikizira.
Ngati mthunzi woyera kapena fluorescence ndiyofunikira, perekani zovomerezeka zovomerezeka kapena zoyezera. Mawu monga oyera owala, oyera osalowerera ndale komanso oyera opanda fulorosenti amatha kutanthauziridwa mosiyana pokhapokha ngati njira zovomerezera zafotokozedwa.
Tchulani ngati mukufuna chosindikizira chosalala kapena chomaliza china. Kuwala kwapamwamba ndi kapangidwe kake kumatha kukhudza mawonekedwe a inki, mtundu wowoneka bwino, kusintha kwa kusindikiza komanso kutsika kwamadzi.
Tiuzeni ngati pepala losindikizidwa lidzadulidwa, kukhomeredwa, kupindika, laminated, kumangidwa kapena kupangidwa mwanjira ina. Izi zimalola kuyesa kwachitsanzo kuwonetsa njira yonse yopanga.
Kukhazikika kwakunja kumaphatikizapo pepala la PC, inki, chithandizo chapamwamba, mitundu yosindikizidwa ndi zokutira zoteteza kapena laminate. Ngati ntchito yapanja ikufunika, tchulani malo omwe mukufuna kuti mugwiritse ntchito ndikuyesa zomangamanga zonse zosindikizidwa.
Thamangani zitsanzo zosindikizira zoyimira ndikuwunika mthunzi woyera, kachulukidwe kamitundu, kumatira kwa inki, kuyanika, kukanda, kupindika ndi mawonekedwe omaliza musanavomereze zinthu zambiri.
Pazinthu zosindikizira za B2B, kusasinthasintha pakati pa magulu nthawi zambiri kumakhala kofunikira monga zofunikira zakuthupi. Kutengera mtundu wazinthu zomwe mwagwirizana, zowongolera zabwino zitha kuphatikiza:
Chizindikiritso cha zinthu ndi batch
Makulidwe ndi makulidwe kulolerana
Mapepala miyeso ndi dimensional kulolerana
Mthunzi woyera ndi mawonekedwe amtundu wowoneka bwino
Maonekedwe a pamwamba ndi ukhondo
Kuyang'ana zokopa, ma dents, kuipitsidwa ndi tinthu takunja
Kusindikiza kapena kuwunika kwa inki komwe kumagwirizana
Kutsimikizika kwazinthu kapena makina-kanthu komwe kwatchulidwa
Kuyika kwachitetezo ndikutsimikizira zilembo
Kuyesa kwachindunji malinga ndi zomwe kasitomala amagula
Ngati kusakhala kwa fluorescence, kugwirizanitsa mitundu, gloss, mphamvu yapamtunda, zomatira zosindikizira kapena zinthu zina ndizofunikira pa polojekiti yanu, phatikizani njira yoyesera yofunikira ndi malire ovomerezeka pamatchulidwe ogula.
Wallis imathandizira osindikiza, opanga zikwangwani, otembenuza zithunzi, opanga makhadi ndi zokutira, ogawa ndi ogula a OEM omwe amafunikira zida zosindikizira zoyera za polycarbonate.
Zinthu zopanda fulorosenti zoyera za polycarbonate
Pafupifupi 0.2-0.5 mm makulidwe osiyanasiyana
Miyeso yosinthidwa malinga ndi kuthekera kopanga
Zofunikira zosindikizidwa pamwamba
Zofunikira zowoneka bwino zoyera
Mafilimu otetezera kapena zotetezera ngati pakufunika
Kupaka mapepala onyamula katundu kunja
Zolemba za OEM ndi zizindikiro zotumizira
Kuwunika kwachitsanzo musanapange zambiri
Wallis amapereka mapepala a polycarbonate ndi mafilimu osindikizira, makadi, zithunzi, zigawo za mafakitale ndi mapulasitiki opangidwa mwamakonda, kuthandiza makasitomala a B2B gwero la zipangizo kutengera zomwe akufuna.
Makulidwe, makulidwe, zofunikira zosindikizira pamwamba, mawonekedwe oyera ndi ma CD zitha kukambidwa molingana ndi projekiti ya wogula ndi kuthekera kopanga.
Kuyesa kwachitsanzo kumathandizira makasitomala kutsimikizira kumatira kwa inki, kutulutsa mitundu, kuyanika ndi kutembenuza mtsinje pogwiritsa ntchito makina awo osindikizira ndi kupanga.
Kuyika makonda, zilembo ndi zofunikira zotumizira zitha kukambidwa pamaoda apadziko lonse a B2B kuti zithandizire kuteteza mawonekedwe a PC osindikizika panthawi yosungira ndi mayendedwe.
Kuthekera kopanga ndi kuwongolera khalidwe kumathandizira mapulojekiti azinthu zamtundu wa polycarbonate kuti azisindikiza ndi ntchito zamafakitale.


Wallis Factory Show

Ndi gawo lapansi loyera la polycarbonate lomwe limapangidwa kuti lipereke mawonekedwe oyera oyera popanda kuyankha koyera mwadala mwadala. Ndikofunikira kusindikiza mapulogalamu omwe mawonekedwe okhazikika a gawo lapansi ndi kuwunika kwamitundu ndikofunikira.
Kumbuyo koyang'aniridwa koyera kopanda fulorosenti kungathandize kuchepetsa kusintha kokhudzana ndi gawo lapansi powunika mitundu yosindikizidwa ndikuwunikira kosiyana. Polycarbonate imaperekanso kukana kwakukulu komanso kukhazikika kothandiza kwazinthu zosindikizidwa zokhazikika.
Palibe gawo limodzi lomwe liyenera kuganiziridwa kuti likugwirizana ndi chosindikizira chilichonse ndi chemistry ya inki. Perekani chitsanzo chosindikizira chanu ndi mtundu wa inki ndikuyesa chitsanzo choyimira musanapange malonda.
Zida zosindikizidwa za polycarbonate zitha kugwiritsidwa ntchito ndi makina osindikizira a digito a UV pomwe pamwamba, inki ndi machiritso zimagwirizana. Gulu lenileni la Wallis liyenera kuyesedwa chifukwa kuwonekera kwa UV, kumatira kwa inki ndi kuchiritsa kumatha kukhudza magwiridwe antchito omaliza.
Chidziwitso chaposachedwa chamankhwala chimalemba pafupifupi 0.2-0.5 mm. Mafotokozedwe makonda akhoza kukambidwa malinga ndi ntchito ndi kuthekera kupanga.
Inde. Makonda pepala miyeso akhoza kukambidwa potengera makulidwe chofunika, luso kupanga, zida zosindikizira ndi kuchuluka dongosolo.
Ayi. Izi ndi zoyera zosindikizira gawo lapansi. Ngati pulojekiti yanu ikufuna PC yowonekera kapena yowonekera kuti musindikize mobwerera, zokutira kapena zithunzi zowunikira kumbuyo, tchulani zofunikirazo mosiyana.
Gawo laling'ono la polycarbonate palokha limalimbana bwino ndi madzi, koma kulimba kwa chithunzi chosindikizidwa kumadalira inki, chithandizo chapamwamba ndi zokutira zoteteza kapena laminate. Yesani zomangira zosindikizidwa zonse zamapulogalamu achilengedwe.
Kugwiritsa ntchito panja kumafuna giredi yoyenera ya PC limodzi ndi inki zokhazikika za UV komanso, ngati kuli kofunikira, zokutira zoteteza. Musaganize kuti kalasi iliyonse ya PC yoyera kapena inkiyi ya inkjet imapereka nyengo yakunja kwanthawi yayitali popanda kuyezetsa.
Polycarbonate imalimbana ndi zinthu zambiri zomwe wamba koma sizigonjetsedwa ndi zosungunulira zonse, ma asidi, alkalis kapena zotsukira. Kukana kwa mankhwala kumadalira mtundu wa mankhwala, ndende, kutentha, kupsinjika maganizo ndi nthawi yowonekera. Yesani mankhwala aliwonse omwe akuyembekezeka pagawo lomwe lasindikizidwa.
Pepala loyenera la polycarbonate limatha kudulidwa ndikumenyedwa. Mukakonza mutatha kusindikiza, yesani ngati kudula, kupindika kapena kukhomerera kumakhudza kumamatira kwa inki kapena kumayambitsa kusweka kowoneka pafupi ndi m'mphepete mwake.
Lamination akhoza zotheka pamene inki, zomatira, PC pamwamba ndi lamination zinthu n'zogwirizana. Kuyesa kumamatira ndi mawonekedwe chifukwa zomatira zina kapena zosungunulira zimatha kulumikizana ndi polycarbonate kapena wosanjikiza wosindikizidwa.
Tsamba la PC losindikizidwa limasankhidwa kapena kukonzedwa pamwamba pa ndondomeko yosindikiza. Polycarbonate yopangira zinthu zambiri imatha kukhala ndi makina abwino kwambiri koma osapereka inki yonyowetsa kapena kumamatira popanda chithandizo.
Osati pulogalamu iliyonse. PC ndiyokongola kwambiri pomwe kukana, kulimba kapena kutentha ndikofunikira. PVC kapena PET ingakhale yoyenera kwambiri pamapulojekiti omwe amaika patsogolo mtengo, kusinthasintha, matekinoloje apadera osindikizira kapena zofunikira zina zosinthira.
Inde. Kuyesa zitsanzo kumalimbikitsidwa kuti makasitomala athe kutsimikizira mawonekedwe oyera, mtundu wa kusindikiza, kumatira kwa inki, kuchiritsa, kudula ndi kupanga komaliza pogwiritsa ntchito zida zawo zenizeni.
Perekani makulidwe ofunikira, miyeso ya pepala, njira yosindikizira, chitsanzo chosindikizira ngati chilipo, mtundu wa inki, zofunikira pamtunda, kunsi kwa mtsinje, kugwiritsa ntchito mapeto, kuitanitsa kuchuluka ndi kopita.
Mukuyang'ana wogulitsa pepala lodalirika lopanda fulorosenti loyera la polycarbonate kuti musindikize inkjet? Tumizani Wallis makulidwe anu ofunikira, kukula kwa pepala, chosindikizira ndi inki zambiri, zofunikira zapamtunda, kugwiritsa ntchito ndi kuchuluka kwa dongosolo. Gulu lathu litha kuwunikanso zomwe mwalemba ndikukonzekera zitsanzo zamapepala oyenera a PC kuti musindikize.
Yambitsani Ntchito Yanu Nafe