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1997— —The company was certified by ISO9001 quality management system
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2018-09-28 15:32:01
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上一篇：1995— —The company adopted VVVF technology in all of its passenger elevators and gained the national gold award for new high-tech products

下一篇：1999— —The first moving walk was set up in Changchun Ouya Commercial Capital

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