Mzerewu nthawi zambiri umakhala ndi makina angapo osiyanasiyana, kuphatikiza makina a chithuza, katoni, ndi cholembera.Makina a chithuza amagwiritsidwa ntchito kupanga mapaketi a chithuza, makatoni amagwiritsidwa ntchito kuyika mapaketi a blister m'makatoni, ndipo cholemberacho chimagwiritsidwa ntchito kuyika zilembo pamakatoni.