Urupapuro

  Urupapuroyakorewe muri Amerika muri 1930.Mu ntangiriro ya za 1980, Wuhan Iron na Steel na Baosteel batangije bwa mbere imirongo ikora ibyuma bisize amabara.Kuva icyo gihe, igihugu cyanjye cyatangiye gukoresha ibara ryanditseho amabara yimbere mu nyubako zinganda, nka Shandong Master Plant, National Cotton and Grain Warehouse, Ibimera mu turere dutandukanye twiterambere, nibindi. ikoranabuhanga, urugero rwo gusaba rukomeje kwaguka kandi dosiye ikomeza kwiyongera.

Kwinjira mu kinyejana cya 21, ubukungu bwigihugu cyanjye bwateye imbere byihuse kandi bihamye.Amabati yubatswe hejuru yamabara nayo yinjiye munzu nini nini ahantu hose kuva mumazu rusange yinganda, nka gari ya moshi, gariyamoshi, stade, inzu y'ibitaramo, hamwe namakinamico.Muri 2008 ibibuga by'imikino Olempike.Igisenge, hasi n'urukuta rw'inyubako bifata ubwoko bw'isahani hamwe no guhangayikishwa cyane no guhuza, kandi uburyo bwo kubaka ni siyanse kandi irwanya ruswa irakomeye.Isahani ya aluminium-zinc, isahani ya aluminium-magnesium-manganese, isahani ya titanium, ibyuma bitagira umwanda, n'ibindi.