Kubva pakati paChikunguru, ichitsigirwa nenhevedzano yezvakanaka zvinhu zvakaita seyeresheni yemagetsi edunhu uye kugadzirisa kwemidziyo, musika wepamba wecalcium carbide wave uchikwira.Kupinda munaGunyana, chiitiko chekuburutswa kwemarori ecalcium carbide munzvimbo dzevatengi muNorth China neCentral China yakaitika zvishoma nezvishoma.Mitengo yekutenga yakaramba ichidzikira zvishoma uye mitengo yadzikira. Muchikamu chekupedzisira chemusika, nekuda kwekutanga kwazvino kwezvirimwa zvePVC zvepamba padanho repamusoro, uye kune zvirongwa zvishoma zvekugadzirisa gare gare, stable market dema. .
