O le gaosiga o paipa uʻamea mea mataʻutia a le kamupani e sau mai le HBIS, SHOUGANG GROUP, BAOSTEEL, TPCO, HENGYANG ma isi faʻalapotopotoga tele-tele-lauiloa gaosi oloa gaosi oloa.
Nofoaga o Shougang
Vaaiga fafo Baogang
Nofoaga ole HBIS
Tiangang fou vaaiga i fafo
Tulaga o Saina Railway
Nofoaga o West Tianjin
