Inkqubo ephambili yokuvelisa umbhobho woxinzelelo oluphezulu: ukufudumeza kwe-billet, ityhubhu ene-perforated, ukwandiswa kombhobho. Ukuqengqeleka kombhobho woxinzelelo oluphezulu, ubungakanani bombhobho kunye nokunciphisa, ukugqiba kunye nombhobho wokupholisa okanye indlela yokuvelisa ingatshiwo Ibillet yokufudumeza iqhina lobushushu lokuchola iqhina elibandayo elitsalwa yikhabhoni elitshisayo...
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