属于传统热作工具钢系列，但经过Rovalma公司的进一步开发，它采用了更高的技术具备了更高的品质。 Family of improved conventional hot work tool steels modified by Rovalma to provide highest tool steel quality and performance at competitive cost .
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属于传统热作工具钢系列，但经过Rovalma公司的进一步开发，它采用了更高的技术具备了更高的品质。 Family of improved conventional hot work tool steels modified by Rovalma to provide highest tool steel quality and performance at competitive cost .
