Synertone Communication Corporation — AGM Information 2012

Aug 8, 2012

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SYNERTONE COMMUNICATION CORPORATION

(Incorporated in the Cayman Islands with limited liability)

(Stock Code: 1613)

SUPPLEMENTAL FORM OF PROXY FOR ANNUAL GENERAL MEETING

I/We[I] ,

of

being the registered holder(s) of[II] shares of HK$0.01 each in the capital of Synertone Communication Corporation (the ‘‘Company’’), HEREBY APPOINT[III] the Chairman of the meeting or of

as my/our proxy to act for me/us at the annual general meeting of the Company to be held at the Conference Room, 3/F, Nexxus Building, 77 Des Voeux Road Central, Hong Kong on Thursday, 23 August 2012 at 2:30 p.m. (or any adjournment thereof) (‘‘2012 AGM’’) for the purpose of considering and, if thought fit, passing the proposed resolutions set out in the supplemental notice convening the 2012 AGM and at 2012 AGM to vote for me/us and my/our name(s) in respect of the resolutions as hereunder indicated, and, if no such indication is given, as my/our proxy thinks fit.

ORDINARY RESOLUTIONS TO BE PASSED PURSUANT TO THE SUPPLEMENTAL NOTICE OF ANNUAL GENERAL MEETING

FOR[IV] AGAINST[IV]

1. To appoint Mr. Zhang Jinbing as an executive director of the Company. 9. To appoint Mr. Wu Xiaowen as an independent non-executive director of the Company.

Dated this day of 2012 Signature[V]

Notes:

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

• II. Please insert the number of shares registered in your name(s) and to which this supplemental form of proxy relates. If no number is inserted, this supplemental form of proxy will be deemed to relate to all the shares in the capital of the Company registered in your name(s).

• III. If any proxy other than the Chairman of the meeting is preferred, strike out the words ‘‘the Chairman of the meeting or’’ and insert the name and address of the proxy desired in the space provided. The proxy need not be a member of the Company but must attend the Meeting in person to represent you. ANY ALTERATION MADE TO THIS SUPPLEMENTAL FORM OF PROXY MUST BE INITIALED BY THE PERSON WHO SIGNS IT.

• IV. IMPORTANT: IF YOU WISH TO VOTE FOR A RESOLUTION, TICK IN THE BOX MARKED ‘‘FOR’’. IF YOU WISH TO VOTE AGAINST A RESOLUTION, TICK IN THE BOX MARKED ‘‘AGAINST’’. Failure to tick either box as instructed will entitle your proxy to cast your vote or abstain from voting at his discretion. Your proxy will also be entitled to vote at his discretion on any amendment of a resolution put to the 2012 AGM.

• V. This supplemental form of proxy must be signed by you or your attorney duly authorised 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 authorised to sign the same.

• VI. To be valid, this supplemental 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 share registrar in Hong Kong, Tricor Investor Services Limited, at 26th Floor, Tesbury Centre, 28 Queen’s Road East, Wanchai, Hong Kong, not less than 48 hours before the time appointed for the holding of the 2012 AGM (or any adjournment thereof).

• VII. In case of joint holders of a share of the Company, any one of such persons may vote, either personally or by proxy, in respect of such share as if he were solely entitled thereto; but if more than one of such joint holders be present at the meeting personally or by proxy, that one whose name stands first on the register of members of the Company in respect of such share will alone be entitled to vote in respect thereof.

VIII. Completion and return of this supplemental form of proxy will not preclude you from attending the 2012 AGM if you so wish. In the event that you, having lodged this form of proxy, attend the 2012 AGM.

• IX. This supplemental proxy form is intended to be used only for resolutions number 8 and 9 as set out in the supplemental notice of the 2012 AGM and serves only as a supplement to the original form of proxy for the 2012 AGM. For resolutions numbers 1 to 7, please use the form of proxy dispatched together with the circular of the Company dated 23 July 2012.