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近日,湖南衡阳钢管(集团)有限公司为满足特殊用户的合同要求,成功开发出带螺纹管线管,此项开发拓宽了公司钢
Recently, Hunan Hengyang Steel Pipe (Group) Co., Ltd. to meet the contract requirements of special users, the successful development of a threaded pipe line, the development of the company to broaden the steel