Chingwe cha Optical CHIKWANGWANI chamakampani.Chingwecho ndi choyenera kugwiritsidwa ntchito mkati ndi kunja.Kulowa m'madzi mosalekeza sikuvomerezeka.Chophimba chakunja cha UV-mafuta- ndi zinthu zolimbana ndi nyengo.Chotchinga chotchinga cha 0.9mm chimalimbikitsidwa ndi ulusi wagalasi wamadzi ndipo amakutidwa mkati mwa jekete yamkati.Zida zachitsulo zimayikidwa pamwamba pa sheath yamkati ndipo jekete lakunja limamaliza kupanga chingwe chonse.Kuchita bwino kwamakina ndi chilengedwe, kutumizirana mauthenga amtundu wapamwamba kwambiri.M'mimba mwake yaying'ono, nambala yayikulu kwambiri, yopondereza kwambiri, yopepuka, yosavuta kugwiritsa ntchito, yomanga yosavuta, yogwirizana ndi waya wokwanira.