Additional Information About the Proposed Merger and Where to Find It

STATS and ChipPAC intend to file with the SEC a proxy statement/prospectus and other relevant materials in connection with the proposed merger (the "Merger") involving STATS and ChipPAC pursuant to the terms of an Agreement and Plan of Merger and Reorganization among STATS and ChipPAC Merger, Inc., a wholly owned subsidiary of STATS, and ChipPAC. A shareholders' circular to be issued by STATS will be mailed to the shareholders of STATS and the proxy statement/prospectus will be mailed to the stockholders of ChipPAC respectively. Investors and security holders of STATS and ChipPAC are urged to read the STATS shareholders' circular and the ChipPAC proxy statement/prospectus and the other relevant materials when they become available because they will contain important information about STATS, ChipPAC and the proposed Merger. The proxy statement/prospectus and other relevant materials (when they become available), and any other documents filed by STATS or ChipPAC with the SEC, may be obtained free of charge at the SEC's web site at http://www.sec.gov/. In addition, investors and security holders may obtain free copies of the documents filed with the SEC by STATS by contacting STATS Investor Relations in the United States at telephone (408) 5860608 or email Email Contact, or in Singapore at telephone (65) 68247705 or email Email Contact. Investors and security holders may obtain free copies of the documents filed with the SEC by ChipPAC by contacting ChipPAC Investor Relations, ChipPAC Incorporated, 47400 Kato Road, Fremont, CA 94538, telephone (510) 979-8220 or email Email Contact or David Pasquale at telephone (646) 536-7006 or email Email Contact. Investors and security holders of STATS and ChipPAC are urged to read the STATS shareholders' circular, the proxy statement/prospectus and the other relevant materials when they become available before making any voting or investment decision with respect to the proposed Merger.

STATS, Mr. Tan Lay Koon, STATS' President and Chief Executive Officer, and certain of STATS' other executive officers and directors may be deemed to be participants in the solicitation of proxies of ChipPAC's stockholders in connection with the proposed Merger. Investors and security holders may obtain more detailed information regarding the names, affiliations and interests of Mr. Tan and certain of STATS' other executive officers and directors in the solicitation by reading the proxy statement/prospectus statement when it becomes available.

ChipPAC, Mr. Dennis McKenna, ChipPAC's President and Chief Executive Officer, and certain of ChipPAC's other executive officers and directors may be deemed to be participants in the solicitation of proxies of ChipPAC's stockholders in connection with the proposed Merger. Such individuals may have interests in the proposed Merger, including as a result of holding options or shares of ChipPAC common stock. Investors and security holders may obtain more detailed information regarding the names, affiliations and interests of Mr. McKenna and ChipPAC's other executive officers and directors in the solicitation by reading the proxy statement/prospectus when it becomes available.

   CONTACT:
   ST Assembly Test Services Ltd
   Elaine Ang, Investor Relations & Corporate Communications Manager
   Tel : 65-68247705

   ChipPAC, Inc.
   David Pasquale, 646-536-7006, or cellphone 917-921-8031,
   
Email Contact, or Jim Olecki, 646-536-7021 or
   
Email Contact

CONTACT: Elaine Ang of ST Assembly Test Services Ltd, +65-68247705; David
Pasquale, +1-646-536-7006, or cellphone +1-917-921-8031,
Email Contact, or Jim Olecki, +1-646-536-7021,
Email Contact, both of The Ruth Group, for ChipPAC, Inc.

Web site: http://www.chippac.com/
http://www.stts.com/