Ndi chitukuko chachangu cha makampani zamagetsi, matabwa PCB akhala mbali yofunika ya zipangizo zosiyanasiyana zamagetsi. Kaya mumagetsi ogula, zamagetsi zamagalimoto, kapena zamankhwala, mafakitale ndi zina, kugwiritsa ntchito ma PCB ndikofunikira kwambiri. Zithunzi za PCB ...
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