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The seamless steel pipe branded as "Qilu Huitong" has obtained the trademark certificate from the national authority. The co***ny has undergone the strict expert review and passed the ISO1:2000 quality mangement system authentication. Whatis more,the co***ny is a director unit of Liaocheng Seamless Steel Pile Operator Association,AAA Co***ny rated by Agricultural Bank of China and Shandong Provincial Creditworthy Co***ny,and its product is awarded as Famous Private Economy Brand of Shandong Province....
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