Ndi chitukuko cha anthu, omwe amagwiritsidwa ntchito m'mafakitale osiyanasiyana a makina ndi zida zogwirira ntchito zimakulanso, Masiku ano monga conveyor wotchuka, flexible chain conveyor ali ndi chiyembekezo chabwino cha msika, koma zida zilizonse zimakhala ndi moyo wa mankhwala, Ayi ...
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