The CB Trigger Levels and CB Expansion Levels for Rubber will be changed to JPY 5.0 from JPY 10.0, from the trading session with the trade date of October 3, 2011 (starting 5:00 pm September 30, 2011).
Basically, from the fourth CB trigger, the CB level will not be expanded except for the current contract month.
However, when deemed necessary by the Exchange, the halt period and trigger level expansion may be modified.