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Kodi mudayamba mwadzifunsapo kuti pulasitiki pepala zakuthupi imasanduka bwanji thireyi , mapanelo, kapena ma phukusi? Imayamba ndi njira yotchedwa thermoforming. PVC ndi imodzi mwa zosankha zabwino kwambiri pa izi. Ndi yolimba, yotetezeka, komanso yosavuta kupanga. Mu positi iyi, muphunzira tanthauzo la PVC thermoforming, chifukwa chake imagwiritsidwa ntchito, komanso njira zabwino zopangira.