An kafa World of Concrete, Las Vegas, Amurka, a cikin 1975 kuma ta gudanar da nune-nunen Informa. Wannan dai shi ne nunin baje koli mafi girma a duniya a masana'antar gine-gine da gine-gine kuma an gudanar da shi tsawon zama 43 kawo yanzu. Bayan shekaru na ci gaba, alamar ta fadada zuwa Amurka, ...
Kara karantawa