Du Du Holdings Limited — Proxy Solicitation & Information Statement 2007

Jul 12, 2007

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CORE HEALTHCARE INVESTMENT HOLDINGS LIMITED

(incorporated in the Cayman Islands with limited liability)

(Stock code: 8250)

NOTICE OF EGM

NOTICE IS HEREBY GIVEN that an extraordinary general meeting (the “EGM”) of the shareholders of Core Healthcare Investment Holdings Limited (the “Company”) will be held at Executive Boardroom, Business Centre, Level 7, Island Shangri-La Hong Kong, Pacific Place, Supreme Court Road, Central, Hong Kong on 2 August 2007 at 3:30 p.m. for the purpose of considering and, if thought fit, passing, with or without modifications, the following resolution as an ordinary resolution of the Company:

ORDINARY RESOLUTION

“ THAT

• (a) the placing agreement dated 12 June 2007 (the “ Placing Agreement ”) entered into between the Company as issuer and Kingston Securities Limited as placing agent in relation to the placing of up to an aggregate of 229,552,000 new shares (the “ Placing Shares ”) of HK$0.01 each in the share capital of the Company at a placing price of HK$0.17 per Placing Share, a copy of which is produced to the Meeting marked “A” and signed by the Chairman of the Meeting for the purpose of identification, and the transactions contemplated thereunder be and are hereby approved, confirmed and ratified;

• (b) conditional upon the Listing Committee of The Stock Exchange of Hong Kong Limited granting the listing of, and permission to deal in, the Placing Shares, the allotment and issue of the Placing Shares to the relevant places pursuant to the Placing Agreement be and is hereby approved; and

• (c) any one director of the Company be and is hereby authorised to do all such things and acts as he/she may in his/her discretion consider as necessary, expedient or desirable for the purpose of or in connection with the implementation of the Placing Agreement and the transactions contemplated thereunder.”

Yours faithfully,

For and on behalf of the Board of

Core Healthcare Investment Holdings Limited Lui Chi Wah, Johnny Chairman

Hong Kong, 13 July 2007

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Registered Office: Ugland House, P.O. Box 309 GT, South Church Street, Grand Cayman, Cayman Islands

Head Office and Principal Place of Business: Room 609-610, 6/F, Nan Fung Tower, 173 Des Voeux Road, Central, Hong Kong

Notes:

1. A shareholder of the Company entitled to attend and vote at the meeting convened by the above notice is entitled to appoint another person as his proxy to attend and vote instead of him. A proxy need not be a shareholder of the Company.

2. To be valid, a form of proxy and the power of attorney or other authority, if any, under which it is signed or a certified copy of such power or authority must be deposited at the Company’s branch share registrar in Hong Kong, Computershare Hong Kong Investors Service Ltd, at 46th Floor, Hopewell Centre, 183 Queen’s Road East, Wan Chai, Hong Kong, not less than 48 hours before the time appointed for the holding of the meeting or any adjournment thereof.

3. Delivery of an instrument appointing a proxy shall not preclude a shareholder of the Company from attending and voting in person at the meeting convened and in such event, the instrument appointing a proxy shall be deemed to be revoked.

4. As at the date of this notice of EGM, the Board comprises two executive Directors namely Mr. Lui Chi Wah, Johnny and Mr. Wu Kai; one non-executive Director namely Mr. Lau Kam Shan; and three independent non-executive Directors namely Mr. Kwok Shun Tim, Mr. Chan Po Kwong, and Mr. Lam Yan Wing.

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