According to Clause 8.8.1, the subscription list for public issues must be open at least three working days and no more than ten working days. Book built issues have a minimum and maximum period of bidding that is between 3-7 working days. This can be extended by 3 days if the price band is changed. A public issue by an infrastructure company that meets the requirements of Clause 2.4.1(iii) in Chapter II can be kept open for a maximum of 21 days. According to clause 8.8.2, rights issues must be kept open for a minimum of 30 days, and no more than 60 days.