Comba Telecom Systems Holdings Limited — Capital/Financing Update 2011

May 23, 2011

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

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REVISED EXPECTED TIMETABLE FOR THE PROPOSED CAPITAL REORGANISATION, THE PROPOSED CHANGE OF BOARD LOT SIZE AND THE PROPOSED RIGHTS ISSUE

The Board announces that the expected timetable for the Capital Reorganisation, the Change of Board Lot Size and the Rights Issue will be revised as set out in this announcement.

Reference is made to the announcement of the Company dated 6 May 2011 in respect of, inter alia, the proposed Capital Reorganisation, the Change of Board Lot Size and the Rights Issue and the announcement of the Company dated 20 May 2011 in respect of the delay in despatch of circular (the “Announcements”). Unless the context requires otherwise, capitalised terms used herein shall have the same meanings as defined in the Announcements.

REVISED EXPECTED TIMETABLE

The Board announces that the expected timetable for the Capital Reorganisation, the Change of Board Lot Size and the Rights Issue will be revised as follows:

Expected date of despatch of the Circular in relation to,

inter alia, the Capital Reorganisation, the Change of Board Lot Size and the Rights Issue to the Shareholders ............................................................................. Monday, 30 May 2011

Latest time for lodging proxy forms for the SGM .....................................10:00 a.m. on Sunday, 19 June 2011

Expected date of the SGM......................................................................... 10:00 a.m. on Tuesday, 21 June 2011

Announcement of the results of the SGM ........................................................................ Tuesday, 21 June 2011

Effective date of the Capital Reorganisation ...............................................................Wednesday, 22 June 2011

Commencement of dealings in the Adjusted Shares ............................. 9:00 a.m. on Wednesday, 22 June 2011

Original counter for trading in the Existing Shares

in existing share certificates in board lots of

10,000 Existing Shares temporarily closes........................................ 9:00 a.m. on Wednesday, 22 June 2011

* for identification purpose only

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Temporary counter for trading in board lots of 1,000 Adjusted Shares (in the form of existing share certificates) opens ............................................................................... 9:00 a.m. on Wednesday, 22 June 2011 First day of free exchange of certificates for the Existing Shares into new certificates for the Adjusted Shares ............................................................................................Wednesday, 22 June 2011 Last day of dealings in the Adjusted Shares on a cum-right basis .............................Wednesday, 22 June 2011 Commencement of dealings in the Adjusted Shares on an ex-right basis ................................................................................ 9:00 a.m. on Thursday, 23 June 2011 Latest time for lodging transfer of the Adjusted Shares in order to be qualified for the Rights Issue .............................................. 4:30 p.m. on Friday, 24 June 2011 Closure of register of members to determine the eligibility of the Rights Issue (both dates inclusive) .................................................................Monday, 27 June 2011 to Wednesday, 29 June 2011 Record Date for the Rights Issue .................................................................................Wednesday, 29 June 2011 Despatch of the Prospectus Documents.......................................................................... Thursday, 30 June 2011 Register of members re-opens ......................................................................................... Thursday, 30 June 2011 First day of dealings in nil-paid Rights Shares .................................................................. Tuesday, 5 July 2011 Original counter for trading in the Adjusted Shares in board lots of 20,000 Adjusted Shares (only new certificates for the Adjusted Shares can be traded at this counter) re-opens .................................................... 9:00 a.m. on Thursday, 7 July 2011 Parallel trading in the Adjusted Shares (in the form of new and existing certificates) commences ..................... 9:00 a.m. on Thursday, 7 July 2011 Designated broker starts to stand in the market to provide matching services for the sale and purchase of odd lots of the Adjusted Shares .................................................................Thursday, 7 July 2011 Latest time for splitting in nil-paid Rights Shares ...................................... 4:30 p.m. on Thursday, 7 July 2011 Last day of dealing in nil-paid Rights Shares................................................................... Tuesday, 12 July 2011 Latest time for acceptance of, and payment for, the Rights Shares and application for excess Rights Shares......................4:00 p.m. on Friday, 15 July 2011 Latest time for termination of the Underwriting Agreement .................4:00 p.m. on Wednesday, 20 July 2011

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Announcement of results of the Rights Issue ..................................................................Thursday, 21 July 2011

Refund cheques for wholly and partially unsuccessful applications

for excess Rights Shares expected to be posted on or before ......................................... Friday, 22 July 2011

Certificates for the Rights Shares expected to be despatched

on or before ....................................................................................................................... Friday, 22 July 2011

Dealings in fully-paid Rights Shares and commence .................................9:00 a.m. on Tuesday, 26 July 2011

Designated broker ceases to stand in the market to

provide matching services for the sale and

purchase of odd lots of the Adjusted Shares ........................................................... Wednesday, 27 July 2011

Temporary counter for trading in board lots of

1,000 Adjusted Shares (in the form of

existing share certificates) closes ........................................................4:00 p.m. on Wednesday, 27 July 2011

Parallel trading in the Adjusted Shares

(in the form of new and existing certificates) ends ............................4:00 p.m. on Wednesday, 27 July 2011

Last day of free exchange of certificates for the Existing Shares

into new certificates for the Adjusted Shares .............................................................Monday, 1 August 2011

Note: All references to time in this announcement are references to Hong Kong time.

By Order of the Board 21 Holdings Limited Ng Kai Man Chairman

Hong Kong, 23 May 2011

As at the date of this announcement, the Board comprises Mr. Ng Kai Man (Chairman), Mr. Cheng Yuk Wo and Mr. Ha Kee Choy, Eugene as executive Directors and Mr. Chui Chi Yun, Robert, Mr. Lui Siu Tsuen, Richard and Mr. Lam Kwok Cheong as independent non-executive Directors.

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