recently, the “technical standards for stainless steel core board building structures” successfully passed the expert group review，which was edited in chief by the china urban science research association, broad construction technology co., ltd. and hunan university, and was jointly compiled by tsinghua university, southeast university, tongji university and tsingtuo group. hundreds of tons of high-strength qn series stainless steel of tsingshan’s first invention were successfully applied to the world’s first stainless steel core board building, achieving a historic breakthrough.
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