Kuchita bwino kwambiri kwa zoyika zopanda ulusi
Kuyika kwa ulusi wopanda chitsulo ndikothandiza kwambiri, zoyikapo ulusi wopanda waya ndi zomangira zopangidwa ndi chitsulo chosapanga dzimbiri cha diamondi choyenga, choyikidwa mu dzenje la ulusi wa aluminum alloy, engineerin...
Onani zambiri