Heilongjiang Sololiang et al. completed”a wintering aeration device for carp breeding ponds in cold northern regions” and obtained the national utility model patent authorization. The authorized patent number is 202020476289.5.
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Heilongjiang Sololiang et al. completed”a wintering aeration device for carp breeding ponds in cold northern regions” and obtained the national utility model patent authorization. The authorized patent number is 202020476289.5.
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