Report copyright - NEEQ : 430100 - TIANYANCHAstock.tianyancha.com/Announcement/cninfo/67a91c3e... · 瓦斯突出 指 是指随着煤矿开采深度的增加、瓦斯含量的增加,在 ... 从市场竞争角度来看,公司在煤层气核心技术领域,拥有同行业领先的钻井、压裂、排采技术/工具
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