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- DRA step-down The most valuable DRA
- Crude oil DRA Oil pipeline DRA
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- Oil field special drag reducing agent
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- An oil / water two phase flow drag reduction agent
- Sinopec drag reducing agent
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- Petrochina drag reduction agent
- The best of drag reduction agent in China
- high quality PPD Crude oil PPD
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- Oil field special Sinopec PPD
- Oil field special pour point depressant
- The most convenient pour point depressant
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- Sinopec pour point depressant
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- Petrochina pour point depressant
- The best of pour point depressant in China