Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Pol. Capt. Prasit Tantsetthi

Independent Director, and Chairman of the Board of Directors

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Cherdpan Bulsook

Director, and Vice-Chairman

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and,
with carefulness in my capacity of the Company’s Executive Directors or
Chief Accounting Executive, hereby certify that such content and
information are complete and correct. There is no omission or false
statement that would materially mislead the investors and/or the
concerned parties. I further certify that

(1) The financial statements and financial information that are integral
parts of this report provide correct and complete information in
material aspect pertaining to the financial position, operating results
and cash flow of the Company and its subsidiaries.

(2) I am responsible for having the Company put in place a reliable
disclosure system to ensure the Company has correctly and completely
disclosed material information of the Company and its subsidiaries and
has complied with the disclosure regulations.

(3) I am responsible for having the Company put in place a good internal
control system and ensuring its compliance with this system. I have duly
reported to our external auditor and Audit Committee the internal
control assessment as of December 31, 2006 which also involved the
significant errors and changes in our internal control system as well as
any misconduct that may affect the financial transactions of the Company
and its subsidiaries.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Somchai Bulsook

Director, Chief Executive Officer, and

Member of Nominating and Corporate Governance Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Gautham Mukkavilli

Director and Member of Compensation Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and,
with carefulness in my capacity of the Company’s Executive Directors or
Chief Accounting Executive, hereby certify that such content and
information are complete and correct. There is no omission or false
statement that would materially mislead the investors and/or the
concerned parties. I further certify that

(1) The financial statements and financial information that are integral
parts of this report provide correct and complete information in
material aspect pertaining to the financial position, operating results
and cash flow of the Company and its subsidiaries.

(2) I am responsible for having the Company put in place a reliable
disclosure system to ensure the Company has correctly and completely
disclosed material information of the Company and its subsidiaries and
has complied with the disclosure regulations.

(3) I am responsible for having the Company put in place a good internal
control system and ensuring its compliance with this system. I have duly
reported to our external auditor and Audit Committee the internal
control assessment as of December 31, 2006 which also involved the
significant errors and changes in our internal control system as well as
any misconduct that may affect the financial transactions of the Company
and its subsidiaries.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Jakkris Bulsook

Director and General Plant Manager – Pathumthani Plant

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. John William Hancock

Independent Director and

Chairman of Nominating and Corporate Governance Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mrs. Kannikar Chalitaporn

Independent Director and Member of Audit Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Photipong Lamsam

Independent Director and Member of Audit Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Prasong Sukhum

Independent Director and Chairman of Audit Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Rahul Bhatnagar

Director

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Ronald Stuart McEachern

Director

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Surajit Wanglee

Director

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Surin Osathanugrah

Independent Director and Member of Compensation Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. Timothy Edward Minges

Director and Member of Nominating and Corporate Governance Committee

Mr. Vipak Vetvitayavatana

Finance Director

Section 3 Certification of the Correctness of the Information

I have reviewed the content and information in this Annual Report and
certify that such content and information are complete and correct.
There is no omission or false statement that would materially mislead
the investors and/or the concerned parties.

To certify the correctness of the whole document, I have authorized Mr.
Vipak Vetvitayavatana to sign or initial all pages of this document. Any
part of the document contains no signature or initial of Mr. Vipak
Vetvitayavatana will not be certified its correctness by me.

Mr. William Ellwood Heinecke

Independent Director and Chairman of Compensation Committee

Mr. Vipak Vetvitayavatana

Finance Director