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tool steels hot rolled square bar steel -dalian yongbao new material technology co., ltd founded in1999, it covers an area of 20, 000m2, construction area is 12, 000m2, a private enterprise which set smelting, electroslag remelting, forging, steel rolling. our company produces hi more...

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Tool Steels hot rolled strip steel -Dalian Yongbao New Material Technology Co., Ltd founded in1999, it covers an area of 20, 000m2, construction area is 12, 000m2, a private enterprise which set smelting, electroslag remelting, forging, steel rolling. Our company produces high sp more...