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1. Kukhazikika kwa Chemical:
Imalekerera bwino mankhwala monga ma asidi ndi ma alkalis ndipo sichita dzimbiri mosavuta. Imasunga magwiridwe antchito bwino ndipo sichidzawonongeka ndi dzimbiri la asidi ndi alkali.
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2. Malo osalala:Malo osalala amalola nthunzi kugawidwa mofanana mu chiwiya chophikira, zomwe zimathandiza kuti kuphika bwino, kuonetsetsa kuti chakudya chimatenthedwa mofanana, ndipo chimakoma bwino.
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3. Zogwiritsidwa ntchito kwambiri:Ili ndi mitundu yosiyanasiyana yogwiritsira ntchito pamakampani ophikira nthunzi ndipo imagwiritsidwanso ntchito kwambiri m'zida zamakono zakukhitchini monga ma steamers ndi ma steamers.
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4. Wokonda zachilengedwe komanso wathanzi:Zopanda poizoni komanso zopanda pake, zimakumana ndi zomwe anthu amakono amafuna kuteteza chilengedwe komanso moyo wathanzi. Simamasula zinthu zovulaza, kuonetsetsa ukhondo ndi chitetezo cha chakudya chophika.
