China Resources Building Materials Technology Holdings Limited — Proxy Solicitation & Information Statement 2007

Aug 30, 2007

GREENFIELD CHEMICAL HOLDINGS LIMITED ���������� [*]

(Incorporated in the Cayman Islands with limited liability) (Stock code: 582)

FORM OF PROXY FOR EXTRAORDINARY GENERAL MEETING OR ANY ADJOURNED MEETING

I/We[1 ]

of

being the registered holder(s) of

shares[2] of HK$0.10 each

in the capital of GREENFIELD CHEMICAL HOLDINGS LIMITED (the “Company”) HEREBY APPOINT[3] the Chairman of the meeting or

of

as my/our proxy to attend, act and vote for me/us and on my/our behalf at the extraordinary general meeting of the Company (the “Meeting”) (and at any adjournment thereof) to be held at Luxembourg Room I-II, 3/F., Regal Kowloon Hotel, 71 Mody Road, Tsimshatsui East, Kowloon, Hong Kong on Friday, 5th October, 2007 at 10:30 a.m. and to vote in respect of the following resolution as indicated below or, if no such indication is given, as my/our proxy thinks fit:

ORDINARY RESOLUTION	FOR4	AGAINST4
To ratify the Agreement, the Disposal and the transactions contemplated thereunderas set out in the notice conveningthe Meeting

Dated this day of 2007 Signature[5]

Notes:

1. Full name(s) and address(es) to be inserted in BLOCK CAPITALS . The names of all joint holders should be stated.

2. Please insert the number of shares registered in your name(s). If no number is inserted, this form of proxy will be deemed to relate to all the shares in the Company registered in your name(s).

3. If any proxy other than the Chairman of the Meeting is preferred, please delete the words “the Chairman of the Meeting or” and insert the name and address of the proxy desired in the space provided. ANY ALTERATION MADE TO THIS FORM OF PROXY MUST BE INITIALLED BY THE PERSON WHO SIGNS IT.

4. IMPORTANT: IF YOU WISH TO VOTE FOR A PARTICULAR RESOLUTION, TICK IN THE RELEVANT BOX MARKED “FOR”. IF YOU WISH TO VOTE AGAINST A PARTICULAR RESOLUTION, TICK IN THE RELEVANT BOX MARKED “AGAINST” . Failure to tick a box will entitle your proxy to cast your vote at his discretion. Your proxy will also be entitled to vote at his discretion on any resolution properly put to the meeting other than those referred to in the notice convening the Meeting.

5. The form of proxy must be signed by you or your attorney duly authorized in writing or, in the case of a corporation, must be either under its common seal or under the hand of an officer or attorney duly authorized.

6. In order to be valid, this form of proxy together with the power of attorney or other authority (if any) under which it is signed or a notarially certified copy thereof must be lodged at the Company’s Registrars in Hong Kong, Tricor Standard Limited at 26/F., Tesbury Centre, 28 Queen’s Road East, Wanchai, Hong Kong not less than 48 hours before the time appointed for the holding of the Meeting or any adjournment thereof.

7. In the case of joint holders of a share, the vote of the senior who tenders a vote, whether in person or by proxy, will be accepted to the exclusion of the vote(s) of other joint holder(s), and for this purpose seniority will be determined by the order in which the names stand in the register of members of the Company.

8. The proxy need not be a member of the Company but must attend the Meeting in person to represent you.

9. Completion and delivery of the form of proxy will not preclude you from attending and voting at the Meeting if you so wish.

* For identification purposes only