Iyi iChina yakakwira yekumhanya yakapetwa kaviri denga mashizha ekugadzira muchina, gadzira kumhanya kunogona kusvika 30 m paminiti kune trapezoid uye courrgated sheets. Uye kaviri layer inogona kuchengetedza yakawanda nzvimbo yefekitori.
Nguva yekutumira: Kubvumbi-26-2021