Umupira usanzwe wijimye hamwe nibirimo bya karubone na chromium byatoranijwe kandi bikomeye kugirango uhangane nigitutu gikomeye hagati yibintu bizunguruka no gutwara impeta.
Carbonetride ku mpeta yimbere ninyuma nuburyo bwibanze bukomeye kumupira wamazi benshi ba Tpi. Binyuze muri ubu buvuzi budasanzwe, gukomera ku isi ya padiri ariyongera; bigabanya kwambara neza.
Ultra-isukuye ibyuma iraboneka muri bimwe bya TPI Ibicuruzwa bisanzwe byibicuruzwa ubungubu, kwambara hejuru-kwambara Kubera ko hamagara umunaniro akenshi uterwa nibikorwa bikomeye bitari ibyuma, muri iki gihe muri iki gihe bisaba urwego rudasanzwe rwisuku.