Executive Director and Highest Accounting Executive

We have prudently examined the facts and figures in the above-mentioned
report. As the executive director and the highest accounting executive,
we declare the facts and figures as complete, accurate, truthful, not
misleading, or not inadequate in materiality– which may cause possible
damage to the bearer or buyer of the securities. In addition, we declare
that

1.  The financial statements and financial information, attached as
    parts of this annual information, present accurate and complete, in
    all material aspects, the financial position, result of operations,
    and cash flows of the Siam Cement Public Company Limited and
    subsidiaries.

2.  We are responsible for fine disclosure system to ensure that the
    Company has accurately and completely disclosed material information
    of the Company and subsidiaries as well as supervising the
    compliance of the system.

3.  We are responsible for good internal control and overseeing the
    conformity to such system. We informed the internal control
    evaluation as at February 24, 2005 to the auditors and the Audit
    Committee. The report included any shortcomings and major changes in
    the internal control system as well as any dishonesty that might
    affect the financial statements of the Company and subsidiaries.

In order to ensure the authenticity and the wholeness of all the said
documents endorsed by us, we instructed Mr. Lucksananoi Pungrasamee to
initial each and every sheet of the document. Should any sheet of
document be without his initial, we will consider such sheet (or sheets)
not certified by us.

The Siam Cement Public Company Limited

  Name Position Signature

1.  Mr. Chumpol NaLamlieng President _____________

2.  Mr. Kan Trakulhoon Executive Vice President _____________

Authorized Person

Mr. Lucksananoi Pungrasamee Corporate Accounting _____________

Director

Non-executive Directors

We have prudently examined the facts and figures in the above-mentioned
report. As the directors of the Company, we declare the facts and
figures as complete, accurate, truthful, not misleading, or not
inadequate in materiality– which may cause possible damage to the bearer
or buyer of the securities.

In order to ensure the authenticity and the wholeness of all the said
documents endorsed by us, we instructed Mr. Lucksananoi Pungrasamee to
initial each and every sheet of the document. Should any sheet of
document be without his initial, we will consider such sheet (or sheets)
not certified by us.

  The Siam Cement Public Company Limited

  Name Position Signature

1.  Mr. Chaovana NaSylvanta Chairman _____________

2.  Air Vice Marshal Kamthon Chairman of The _____________

Sindhvananda Audit Committee

3.  Mr. Paron Israsena Director, The Audit Committee _____________

4.  Mr. Snoh Unakul Director _____________

5.  Mr. Sivavong Changkasiri Director, The Audit Committee ____________

6.  Mr. Sumet Tantivejkul Director, The Audit Committee _____________

Authorized Person

Mr. Lucksananoi Pungrasamee Corporate Accounting _____________

Director

  Non-executive Directors

We have prudently examined the facts and figures in the above-mentioned
report. As the directors of the Company, we declare the facts and
figures as complete, accurate, truthful, not misleading, or not
inadequate in materiality– which may cause possible damage to the bearer
or buyer of the securities.

In order to ensure the authenticity and the wholeness of all the said
documents endorsed by us, we instructed Mr. Lucksananoi Pungrasamee to
initial each and every sheet of the document. Should any sheet of
document be without his initial, we will consider such sheet (or sheets)
not certified by us.

  The Siam Cement Public Company Limited

  Name Position Signature

7.  Mr. Yos Euarchukiati Director _____________

8.  Mr. Pricha Attavipach Director, The Audit Committee _____________

9.  Mr. Panas Simasathien Director _____________

10. Mr. Arsa Sarasin Director _____________

11. Mr. Boonsithi Chokwattana Director _____________

Authorized Person

Mr. Lucksananoi Pungrasamee Corporate Accounting _____________

Director