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How long does it take for men to be positive in China?
Disease analysis:

Hello. The penis length of young and middle-aged men in China is weak, and the average normal range is 5.39~9.47cm. After erection, the average normal range is11.87 ~15.27 cm.

Guiding opinions:

Therefore, as long as you are weak or erect, it is normal within the above range.