Kusukela maphakathi noJulayi, okusekelwa uchungechunge lwezici ezivumayo ezifana nesilinganiso samandla esifunda nokugcinwa kwemishini, imakethe yasekhaya ye-calcium carbide ibilokhu ikhuphuka. Ukungena kukaSepthemba, ukwenzeka kokuthululwa kwamaloli e-calcium carbide ezindaweni zabathengi eNyakatho neChina naseCentral China kwenzeke kancane kancane. Izintengo zokuthenga ziqhubekile nokuxega kancane futhi amanani ehlile. Esigabeni sakamuva semakethe, ngenxa yokuqaliswa okuphelele kwamanje kwezitshalo zasekhaya ze-PVC ezingeni eliphezulu uma kuqhathaniswa, futhi kunezinhlelo ezimbalwa zokunakekela kamuva, ukuqina kwemakethe okuzinzile. .
