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简介：国内工业用内衬不锈钢复合管新闻 　　天然气价改在即 中石化接连收购国外资源 　　有专家表示，天然气价格改革近在眼前，价格上涨是未来必然趋势。为获取更大“蛋糕”份额，2月25日，中石化旗下的国际石油勘探开发公司与美国切萨皮克公司签署协议，
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