Pakutanga kwegore idzva, tekinoroji yeBonan yakasaina chirongwa chitsva chine saizi yehari ye zinc ye13m * 3.2m * 4m uye kugona kunyungudutsa zinc ye1100 matani, zvichiita kuti gore idzva ritange zvakanaka.
Nguva yekutumira: Ndira-12-2016