Tianjin Youfa Ferro Pipe Group Co.,Ltd die 1 Iulii anno 2000. condita est, societas sex bases productionis in Tianjin, Tangshan, Handan, Shaanxi Hancheng, Jiangsu Liyang et Liaoning Huludao. Pro 10 decies centena ton ferrea fistula in Sinis fabrica, YOUFA maxime pro...
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