Lei Yongxin: After Qinyang apple tree is fertilized, can it be watered, when is it suitable? Question: On this issue, the reporter interviewed Lei Zongzhong, a professor and fruit expert at Yangling Vocational and Technical College.
Lei Zongzhong .......
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Medical Devices Ad. Approval No.: 6018982323
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Medical Device Regulatory Type: Type 3
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