Comba Telecom Systems Holdings Limited — Capital/Financing Update 2012

May 18, 2012

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 the 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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(incorporated in Bermuda with limited liability) (stock code: 1003)

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

Reference is made to the announcement of the Company dated 9 May 2012 (the “ Announcement ”) in relation to, among other matters, the proposed Capital Reorganisation and the Change in Board Lot Size. Unless otherwise defined, capitalised terms used herein shall have the same meanings as defined as the Announcement.

As the expected date for the holding of the SGM has been postponed, the Board announces that the expected timetable for the proposed Capital Reorganisation and the Change in Board Lot Size has been revised as follows:

Expected date of despatch of the circular in relation to, inter alia, the Capital Reorganisation and the Change in Board Lot Size to the Shareholders . . . . . . . . . . . . . . . . . . . . . . . . . Wednesday, 23 May 2012 Latest time for lodging proxy forms for the SGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . .9:30 a.m. on Wednesday, 13 June 2012 Expected date of the SGM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:30 a.m. on Friday, 15 June 2012 Announcement of the results of the SGM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Friday, 15 June 2012 Effective date of the Capital Reorganisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Monday, 18 June 2012 Commencement of dealings in the Adjusted Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:00 a.m. on Monday, 18 June 2012 Original counter for trading in the Existing Shares in existing share certificates in board lots of 20,000 Existing Shares temporarily closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:00 a.m. on Monday, 18 June 2012 Temporary counter for trading in Adjusted Shares in board lots of 4,000 (in the form of existing share certificates) opens . . . . . . . . . . . . . . . . . . . 9:00 a.m. on Monday, 18 June 2012

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First day of free exchange of certificates for the Existing Shares into new certificates for the Adjusted Shares. . . . . . . . . . . . . . . . . . . Monday, 18 June 2012 Original counter for trading in the Adjusted Shares in board lots of 10,000 (only new certificates for the Adjusted Shares can be traded at this counter) re-opens . . . . . . . . . . . . . . . . . . . . . . . . 9:00 a.m. on Tuesday, 3 July 2012 Parallel trading in the Adjusted Shares (in the form of new and existing share certificates) commences. . . . . . . . . . . . . . . . . . 9:00 a.m. on Tuesday, 3 July 2012 Designated broker starts to stand in the market to provide matching services for the sale and purchase of odd lots of the Adjusted Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9:00 a.m. on Tuesday, 3 July 2012 Temporary counter for trading in Adjusted Shares in board lots of 4,000 (in the form of existing share certificates) closes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:00 p.m. on Monday, 23 July 2012 Designated broker ceases to stand in the market to provide matching services for the sale and purchase of odd lots of the Adjusted Shares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:00 p.m. on Monday, 23 July 2012 Parallel trading in the Adjusted Shares (in the form of new and existing certificates) ends . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4:00 p.m. on Monday, 23 July 2012 Last day of free exchange of certificates for the Existing Shares into new certificates for the Adjusted Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Thursday, 26 July 2012

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

The above expected timetable is for indicative purposes and is subject to change. Should there be any changes to this timetable, the Company will make further announcement.

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

Hong Kong, 18 May 2012

As at the date of this announcement, the Board comprises Mr. Ng Kai Man (Chairman) and Mr. Cheng Yuk Wo as executive Directors and Mr. Lui Siu Tsuen, Richard, Mr. Ding Chung Keung and Ms. Cheung Sze Man as independent non-executive Directors.

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