Tiyo an asye manifakti materyèl bwit nan konpayi an soti nan HBIS, SHOUGANG GROUP, BAOSTEEL, TPCO, HENGYANG ak lòt mondyal gwo-echèl byen li te ye antrepriz manifakti asye.
Kote Shougang
Baogang ekstèn View
Kote HBIS
Nouvo Tiangang ekstèn View
Kote Lachin Railway
Kote West Tianjin
