n EX-99.1.

Changes in Affiliates (Addition)

1. Company to be affiliated

- Company Name: POSDATA-CHINA

- Total Asset (KRW): 191,900,000

- Total Equity (KRW): 191,900,000

- Total Liabilities (KRW): -

- Total Capital (KRW): 191,900,000

- Purpose of the company :
POS-Watch (a brand name of the digital video recorder) sales,
System Management services to affiliates of POSCO in China,
System Integration services to non-affiliates of POSCO in China

2. Name of Company Group: POSCO

3. Reason for Addition: Incorporation of a new corporation

4. Total number of affiliated companies after additional affiliation: 60

5. Date of Addition: October 25, 2006

6. Others

- The above amount is applied with the exchange rate on Oct.25.2006 (W/$:959.50). Total capital of POSCO-CHINA in USD is U$ 200,000