Amagwiritsidwa ntchito podyetsera zida muzophwanyira mowirikiza komanso mosalekeza mumzere wamchenga wamchenga, ndipo amatha kuyang'ana zida zabwino.Zida zimenezi chimagwiritsidwa ntchito m'madera a metallurgical, malasha, mchere processing, zomangira, zomangamanga mankhwala, akupera, etc.