Eka nguva ya manguva lawa, xilaveko xa switirhisiwa leswi tiyeke ni leswi nga ni swilo swo tala xi tlakuke ngopfu, ngopfu-ngopfu eka tiindasitiri to aka ni ta vumaki. Exikarhi ka switirhisiwa leswi, galvanized steel coil yi humelerile tani hi xiphemu xa nkoka, leswi khumbhaka swinene swiyenge swo hambana. Xihloko lexi xi kambisisa tindlela ta ntlhanu leti hlamarisaka .
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