Xu Shaofa 999 LSZ II, an upgrade for Xu Shaofa 999 LSZ,
developed by Mr. Xu Shaofa, ex-head coach of China National Team.
It effectively solved the inconsistency between friction and speed,
avoided energy waste of traditional rubber between rubber sheet and sponge
by introducing up-to-date "tension" technology,
while mostly transfers strength to the ball,
it keeps the feature of thin rubber-shoots rapidly.
it is mostly practical for modern fast attack-spin player.
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