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Location：主页 > ENGLISH > About > Honor > Honor
Tubing anti - corrosion Association membership card
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Date：2017-09-24 14:49:26
Pipe Industry Dongying Science and Technology Award
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Date：2017-09-24 14:48:37
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Date：2017-09-24 14:47:36
Project quality management excellent construction unit
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Date：2017-09-24 14:45:30
High strength composite material liner innovation award
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Date：2017-09-24 14:44:57
China Patent Protection Association membership card (tube in
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Date：2017-09-24 14:44:26