09:30 <03842>,<03843>,<03844> - Announcement (1) This announcement appears for information purposes only and does not constitute an invitation or offer to acquire, purchase or subscribe for the Warrants described below. The Stock Exchange of Hong Kong Limited (the `Stock Exchange') takes no responsibility for the contents of this announcement, makes no representation as to its accuracy or completeness and expressly disclaims any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement. 300,000,000 European Style (Cash Settled) Call Warrants 2005-2006 relating to the existing issued ordinary shares of HK$0.10 each of China Mobile (Hong Kong) Limited (`Series A') 100,000,000 European Style (Cash Settled) Call Warrants 2005-2006 relating to the existing issued ordinary shares of US$0.50 each of HSBC Holdings plc (`Series B') 200,000,000 European Style (Cash Settled) Call Warrants 2005-2006 relating to the existing issued ordinary H shares of RMB1.00 each of Huaneng Power International, Inc. (`Series C') issued by CREDIT SUISSE FIRST BOSTON (incorporated under the laws of Switzerland) Sponsor/Manager CREDIT SUISSE FIRST BOSTON (HONG KONG) LIMITED Credit Suisse First Boston (the `Issuer') announces its intention to issue the series of Warrants detailed below (the `Warrants'). In respect of Series A and Series B, every ten Warrants and in respect of Series C, each Warrant relate(s) to one ordinary share of the relevant par value specified below (the `Shares') of the relevant company specified below (each a `Company'). Company Warrants Share Issue Expiry Board Exercise Price Date Lots Price China Series A HK$0.10 HK$0.251 January 5,000 HK$22.88 Mobile 18, 2006 (Hong Kong) Limited HSBC Series B US$0.50 HK$0.472 January 4,000 HK$126.88 Holdings 18, 2006 plc Huaneng Series C RMB1.00 HK$0.494 January 2,000 HK$5.38 Power 18, 2006 Internati onal, Inc. The Warrants are European style and may only be exercised on the relevant Expiry Date. The Warrants are in registered form and exercisable only in the board lots specified above. In respect of Series A and Series B, every ten Warrants and in respect of Series C, each Warrant entitle(s) the holder on exercise thereof to receive from the Issuer a payment of an amount in Hong Kong dollars calculated by the Issuer (the `Cash Settlement Amount') equal to (1) the Entitlement (as defined in the terms and conditions of the Warrants) (subject to adjustment) multiplied by (i) the arithmetic mean of the closing price of one Share (as derived from the Daily Quotation Sheet of the Stock Exchange, subject to any adjustments) for each Valuation Date (being each of the five Business Days (as defined in the terms and conditions of the Warrants) immediately preceding the Expiry Date as more fully described in the terms and conditions of the Warrants) less (ii) the relevant Exercise Price (subject to adjustment); less (2) the Exercise Expenses (as defined in the terms and conditions of the Warrants). For the avoidance of doubt, if the Cash Settlement Amount is a negative figure, it shall be deemed to be zero. If, on any Expiry Date, the Cash Settlement Amount is more than zero, the Warrants will be automatically exercised (without any notice being given to the holders of the Warrants) and the Issuer will pay to the holders the Cash Settlement Amount calculated as described above. The implied volatility, gearing, effective gearing and premium of the Warrants are detailed below. These values may not be comparable to similar information provided by other issuers of derivative warrants as each issuer may use different pricing models. Warrants Implied Gearing Effective Premium Volatility Gearing Series A 25 per cent. 9.34X 5.61X 8.27 per