EXHIBIT 12.1
CERTIFICATION
I, Ku-Taek Lee, certify that:
1. I have reviewed this annual report on Form 20-F of POSCO;
2. Based on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the company as of,
and for, the periods presented in this report;
4. The company's other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the company and have:
a. Designed such disclosure controls and procedures, or caused such
disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the
company, including its consolidated subsidiaries, is made known to us
by others within those entities, particularly during the period in
which this report is being prepared;
b. Evaluated the effectiveness of the company's disclosure controls and
procedures and presented in this report our conclusions about the
effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this report based on such evaluation; and
c. Disclosed in this report any change in the company's internal control
over financial reporting that occurred during the period covered by the
annual report that has materially affected, or is reasonably likely to
materially affect, the company's internal control over financial
reporting; and
5. The company's other certifying officer(s) and I have disclosed, based on our
most recent evaluation of internal control over financial reporting, to the
company's auditors and the audit committee of the company's board of directors
(or persons performing the equivalent functions):
a. All significant deficiencies and material weaknesses in the design or
operation of internal control over financial reporting which are
reasonably likely to adversely affect the company's ability to record,
process, summarize and report financial information; and
b. Any fraud, whether or not material, that involves management or other
employees who have a significant role in the company's internal control
over financial reporting.
Date: June 28, 2004 /s/ KU-TAEK LEE
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Ku-Taek Lee
Chief Executive Officer
EXHIBIT 12.1
CERTIFICATION
I, Dong-Hee Lee, certify that:
1. I have reviewed this annual report on Form 20-F of POSCO;
2. Based on my knowledge, this report does not contain any untrue statement of a
material fact or omit to state a material fact necessary to make the statements
made, in light of the circumstances under which such statements were made, not
misleading with respect to the period covered by this report;
3. Based on my knowledge, the financial statements, and other financial
information included in this report, fairly present in all material respects the
financial condition, results of operations and cash flows of the company as of,
and for, the periods presented in this report;
4. The company's other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-15(e) and 15d-15(e)) for the company and have:
a. Designed such disclosure controls and procedures, or caused such
disclosure controls and procedures to be designed under our
supervision, to ensure that material information relating to the
company, including its consolidated subsidiaries, is made known to us
by others within those entities, particularly during the period in
which this report is being prepared;
b. Evaluated the effectiveness of the company's disclosure controls and
procedures and presented in this report our conclusions about the
effectiveness of the disclosure controls and procedures, as of the end
of the period covered by this report based on such evaluation; and
c. Disclosed in this report any change in the company's internal control
over financial reporting that occurred during the period covered by the
annual report that has materially affected, or is reasonably likely to
materially affect, the company's internal control over financial
reporting; and
5. The company's other certifying officer(s) and I have disclosed, based on our
most recent evaluation of internal control over financial reporting, to the
company's auditors and the audit committee of the company's board of directors
(or persons performing the equivalent functions):
a. All significant deficiencies and material weaknesses in the design or
operation of internal control over financial reporting which are
reasonably likely to adversely affect the company's ability to record,
process, summarize and report financial information; and
b. Any fraud, whether or not material, that involves management or other
employees who have a significant role in the company's internal control
over financial reporting.
Date: June 28, 2004 /s/ DONG-HEE LEE
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Dong-Hee Lee
Chief Financial and Accounting Officer