This communication is filed pursuant to Rule 425 under the Securities Act of
1933, as amended, and deemed filed pursuant to Rule 14a-12 under the Securities
Exchange Act of 1934, as amended.

                                                  Subject Company: ChipPAC, Inc.
                                               Commission File Number: 000-31173
                                                         Date: February 12, 2004


The following is a form of letter sent to suppliers of ST Assembly Test Services
Ltd and ChipPAC, Inc.



                              STRICTLY CONFIDENTIAL


LETTER TO SUPPLIERS

Dear Supplier [insert supplier name here],

As you might have heard from the news on February 10th, STATS and ChipPac, have
announced that they have entered into a definitive agreement to merge. As a
supplier of [STATS/ChipPac], we would like to give you more details of the
merger and highlight some of the potential opportunities moving forward.

The merger of STATS and ChipPac will create one of the world's premier
independent semiconductor assembly and test solutions companies with over US$1
Billion in revenue in 2004. It will have one of the broadest portfolios of
assembly products and leadership in advance packaging technologies such as
stacked die, SiP and wafer level packaging. The new company will have a global
blue-chip roster of major semi-conductor customers and manufacturing footprint
spanning Korea, China, Taiwan, Malaysia, Singapore and the United States. It
will also have exposure to the two fastest growing market segments -
communications and digital consumer electronics, and have one of the strongest
balance sheet and credit profiles in the industry, improving our financial
stability.

The merger is still subject to customary regulatory approvals and shareholder
votes and is expected to close by the end of the second quarter of calendar year
2004.

Going forward, the new company will have the scale and scope to deepen and
broaden relationships with its preferred suppliers who can provide it with the
best combination of service, price and quality, a significant opportunity for
our suppliers.

In the near term, we do not anticipate any changes to the current procurement
process or your contact persons within [STATS/ChipPac],. We will honor our
existing supply agreements, and we will be looking forward to your maintaining
the current levels of service and quality you have been providing to us.

We will keep you updated on the merger process and any changes to our
procurement processes. If you have any questions or queries, please do not
hesitate to get in touch with [insert procurement contact name here].


Yours sincerely,




VP, Procurement or Procurement Director





DISCLAIMER

This letter contains forward-looking statements including statements concerning
the proposed merger involving STATS and ChipPAC, the expected financial
performance of STATS and ChipPAC, as well as the strategic and operational plans
of STATS and ChipPAC. Actual events or results may differ materially from those
described in this memo due to a number of risks and uncertainties including,
among others, the possibility that the transaction will not close or that the
closing may be delayed; the ability of STATS and ChipPAC to successfully
integrate their operations and employees; the introduction of new products by
competitors or the entry of new competitors into the markets for the products of
STATS and ChipPAC; and economic and political conditions in the U.S. and abroad.
More information about potential factors that could affect the business and
financial results of STATS or ChipPAC is included in each of their filings with
the Securities and Exchange Commission (the "SEC") which are available at the
SEC's website at www.sec.gov. Neither STATS nor ChipPAC undertakes any
obligation to update these forward-looking statements to reflect events or
circumstances after the date of this letter.

In connection with their proposed merger, STATS and ChipPAC will file a proxy
statement/prospectus with the SEC. INVESTORS AND SECURITY HOLDERS ARE ADVISED TO
READ THE PROXY STATEMENT/PROSPECTUS WHEN IT BECOMES AVAILABLE, BECAUSE IT WILL
CONTAIN IMPORTANT INFORMATION. Investors and security holders may obtain a free
copy of the proxy statement/prospectus (when available) and other documents
filed by STATS and ChipPAC at the SEC's web site at www.sec.gov. The proxy
statement/prospectus and such other documents may also be obtained for free from
STATS by contacting STATS Investor Relations in the United States at telephone
(408) 586-0608 or email daviesd@statsus.com, or in Singapore at telephone (65)
6824-7705 or email angelaine@stats.st.com.sg, and from ChipPAC by contacting
ChipPAC Investor Relations at telephone (510) 979-8220 or email ir@chippac.com.

STATS, ChipPAC and certain of each of their 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. Certain of 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 such persons involved in the solicitation by reading the proxy
statement/prospectus when it becomes available.