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CN106838451A
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A kind of automatic alarm type butterfly-valve controller
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CN106838427A
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A kind of multi-functional control butterfly valve
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CN106838426A
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A kind of power plant's butterfly-valve controller
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CN106838344A
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A kind of butterfly valve adjusting means
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CN106838343A
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A kind of electric butterfly valve control device
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CN106838439A
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A kind of butterfly valve driver
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CN106870811A
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A kind of butterfly valve switch control device
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CN106838342A
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A kind of butterfly-valve controller used for wind power generation
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CN106838341A
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A kind of hydraulic butterfly valve control device
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CN106885029A
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A kind of Pneumatic butterfly valve device
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CN105840856A
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Fluorine lining flange ball valve
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