Mtundu wa Mawilo Wopopera

Chosinthira manyowa cha mtundu wa gudumu ndi choyenera kuwiritsa ndowe zazikulu komanso zazikulu za ziweto ndi nkhuku, matope ndi zinyalala, kusefa zinyalala zachilengedwe monga matope a fakitale ya shuga, keke ya slag yochepa ndi utuchi wa udzu. Makinawa amagwiritsidwanso ntchito kwambiri m'mafakitale a feteleza zachilengedwe, feteleza wophatikizika, zomera za matope ndi zinyalala, minda yamaluwa ndi zomera za bisporous kuti ziwiritse ndi kutaya madzi m'thupi.

Chosinthira manyowa chimakhala choyenera kwambiri pa ntchito ndi zofunikira pa njira zopangira zinthu zophika tizilombo toyambitsa matenda. Kupanga mpweya woipa komanso wonunkhira bwino monga mpweya wa amine ndi antimony, zomwe zimakwaniritsa zofunikira zoteteza chilengedwe, zimatha kupanga feteleza wabwino wa bio-organic.