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Collecting device with vibration screen
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Drying tower with electric heating device
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Duplex filter provided catalyst preparation apparatus
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A vacuum distillation device
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Spray drying tower for preparing oil refining catalyst
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Press filter for preparing amantadine hydrochloride
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Feeding unit before spray drying
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Drying-spraying system for catalytic cracking catalyst
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Air-flow grading unit dust recovery device
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