一.Kodi tanthawuzo la chitoliro chachitsulo chosasunthika Ndi chiyani chimatanthawuza kuti palibe weld pa chitoliro chachitsulo, popanga amapangidwa ndi billet mwachindunji adagulung'undisa, chifukwa cha chiyanjano chosasunthika, ali ndi ubwino wabwino wotsutsa kuthamanga kwakukulu, nthawi zambiri amagwiritsidwa ntchito ngati chubu chowotcha. , chubu, chubu, migolo, ili ndi kutentha ...
Werengani zambiri