1. Kuyika ndi kugwiritsa ntchito minda ya zida zazing'ono zamakina Zida zamakina zazing'ono zimatanthawuza zida zamakina zazing'ono, zopepuka komanso zotsika mphamvu. Chifukwa chaching'ono, mawonekedwe osavuta, osavuta kugwiritsa ntchito ndi kukonza, amagwiritsidwa ntchito kwambiri m'nyumba, maofesi, mafakitale, ma laboratories ...
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