Wokhala ndi makina opangidwa ndi akatswiri opanga sputum ndi othandizira ku China, makina onse otetezedwa a spitum amapereka mfundo zapadziko lonse lapansi, ndipo mutha kukhala otsimikizika moyenera. Ngati simukupeza makina anu onyamula onyamula onyamula sputum mu mndandanda wathu wopanga, muthanso kulumikizana nafe, titha kupereka ntchito zokonda.