发布时间:2025-01-31 18:52:04
金刚石行业目前已经经过一轮整合,处于寡头垄断时期。国内三大龙头企业分别是中南钻石股份公司、黄河旋风和豫金刚石。三大企业市场占有率高达82%。
► 中南钻石年产人造金刚石25 亿克拉,市占率为46%;
► 黄河旋风年产人造金刚石15 亿克拉,市占率为28%;
► 豫金刚石年产人造金刚石4.2 亿克拉,市占率约8%。
中南的会好一点吧
采用拟静力法对土石坝进行抗震稳定计算时应符合下列哪些选项的要求
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