Amagwiritsidwa ntchito podyetsera zida muzophwanyira mowirikiza komanso mosalekeza mumzere wamchenga wamchenga, ndipo amatha kuyang'ana zida zabwino.Zida zimenezi chimagwiritsidwa ntchito m'minda ya zitsulo, malasha, mchere processing, zomangira, uinjiniya mankhwala, akupera, etc.