Kodi Mbale za Aluminiyamu za Marine-Grade ndi Chifukwa Chiyani Zimakanira Kuwonongeka??
Zotengera zazikulu Mbale za aluminiyamu zam'madzi zimaphatikizidwa ndi magnesium, manganese, ndi silicon kuti apange wosanjikiza woteteza oxide womwe umalimbana ndi dzimbiri lamadzi amchere. Filimu yodzichiritsa yokha ya oxide (aluminium oxide) […]