| Service Center |
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| 1、Technology R & D and Technical Support Center |
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| Construction Machinery Technology R & D Center |
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| Technical Support Hotline：86-513-87268799 |
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Marine Engineering Equipment Technology R & D Center |
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| Technical Support Hotline：86-513-87268599 |
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| Mining machinery technology R & D Center |
| Technical Support Hotline：86-513-87268888 |
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| 2、Service Center ：86-513-87268666 87268999 |
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