1, ntchito zosiyanasiyana mu ufa chingwe thireyi: oyenera kuyala zingwe kompyuta, zingwe kulankhulana, zingwe thermocouple ndi zina kwambiri tcheru dongosolo zingwe ulamuliro, etc. Perforated chingwe thireyi: ndi ambiri ankagwiritsa ntchito mafuta, mankhwala, makampani kuwala, TV, telecommunicatio ...
Werengani zambiri