Qingdao Yidongxiang Steel Structure Co., Ltd. is a branch of Qingdao Sanfeng Construction Co., LTD. founded in July 2002 , is now the biggest steel structure manufacturer in northern China after a 20-years stable development. Due to its powerful technique and rich engineering experience,our company has achieved National Professional Contractors class one for steel structure projects, and we also have obtained EN1090 Certification (CE), ISO 9001, ISO14001, ISO45001 Certificate

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