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Shandong liaocheng friendship tubing Co., LTD. Is a large-scale enterprise seamless steel circulation. My co***ny's main: # 20 seamless tube, 45 # seamless tube, high pressure boiler tube, alloy pipes, stainless steel pipe, low-temperature tube, line pipe, the perennial sales tianjin, steel, cure steel, baosteel, baotou, hengyang, anshan, Japan and several other major steel seamless tube, spot stock resources material standards: structure GB8162-1999, fluid pipe tube GB/T8163-1999, low medium-voltage boiler...
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