By ministry of company of Tang Shan iron and steel, metallurgy steelworks of company of iron and steel of hill of Information Criterion academy, saddle, big smelt metal is drafted jointly.

 
  • 由唐山鋼鐵公司、冶金部信息標準研究院、鞍山鋼鐵公司、大冶鋼廠(chǎng)共同起草。
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