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- The patent certificate about Double-wall tank (6)Clicks：2527
2017-06-12 13:46:16 Classification： - The patent certificate about Double-wall tank (5)Clicks：2577
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2017-06-12 13:41:01 Classification： - High - tech enterprise certificateClicks：2533
2017-06-12 13:39:46 Classification： - Advanced material suppliers from SinopecClicks：2744
2017-06-12 13:38:12 Classification： - The certificate of ULClicks：2625
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