Denmark's Jan O Jorgensen was marginally behind Lee with a 407 kph missile in the semi-finals of the Malaysia Open this year.
Thailand's Ratchanok Intanon, the second-ranked in women's badminton, is not too far behind and clocked 372kph in the semi-finals of the same tournament in Malaysia.
Five-time world champion Lin Dan of China recorded a 401 kph smash on his way to victory in the 2015 Japan Open.
(Reporting by Sudipto Ganguly; editing by Amlan Chakraborty)
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