Bio Cassava Technology Holdings Limited
九九九九 方方方方 科科科科 技技技技 控控控控 股股股股 有有有有 限限限限 公公公公 司司司司
(Incorporated in the Cayman Islands with limited liability)
(Stock Code: 8129)

CHANGE OF HEAD OFFICE
AND
PRINCIPAL PLACE OF BUSINESS IN HONG KONG

The board of directors (the “Board”) of Bio Cassava Technology Holdings Limited (the
“Company”) announces that the Company’s head office and principle place of business in
Hong Kong will be changed to Unit 610C, 612-613, Level 6, Core D, Cyberport 3, 100
Cyberport Road, Hong Kong with effect from 10 December 2007.

By order of the board of directors of
Bio Cassava Technology Holdings Limited
LEUNG LAP YAN

Chairman

Hong Kong, 7 December 2007

As of the date hereof, the executive directors are Mr. Kwan Kin Chung, Mr. Tam Kam Biu
William, Mr. Wan Xiaolin and Mr. Chen Man Lung, the non-executive directors are Mr.
Leung Lap Yan and Mr. Leung Lap Fu Warren, the independent non-executive directors are
Mr. Ip Chi Wai, Mr. Tse Wang Cheung Angus and Mr. Shiu Kwok Keung.

This announcement, for which the directors of the Company collectively and individually accept full
responsibility, includes particulars given in compliance with the Rules Governing the Listing of Securities on
the Growth Enterprise Market of The Directors of the Company, having made all reasonable enquiries,
confirm that, to the best of their knowledge and belief:- (1) the information contained in this announcement is
accurate and complete in all material respects and not misleading; (2) there are no other matters the omission
of which would make any statement in this announcement misleading; and (3) all opinions expressed in this
announcement have been arrived at after due and careful consideration and are founded on bases and
assumptions that are fair and reasonable.

This announcement will remain on the GEM website at http://www.hkgem.com on the “latest company
announcement” page for at least 7 days from the day of its posting.

for identification purposes only