The only Hong Kong company known to have an office in the World Trade Centre said its three employees were unhurt in the terrorist attack. The employees of Tai Fook Securities were in an office in the north tower. A spokesman said there had been enough time for them to escape. The impact of the business lost due to the disaster would be minimal, he said. Tai Fook had planned to close the operation this month because of poor sentiment in the US stock market. One person at an unidentified China-based company in the World Trade Centre suffered a leg injury, Beijing's Ministry of Foreign Trade and Economic Co-operation said yesterday. No other injuries or fatalities were reported by China-based companies with offices in the centre. The ministry said 14 mainland companies with offices in the centre employed about 30 staff, based on the most recent information from the Chinese Consulate in New York. 'We're still trying to determine exactly how many Chinese enterprises were in the World Trade Centre,' a spokesman said. Sinopec, China's second-largest oil and petrochemical company, said all seven employees in its office at the centre were safe. The loss of the office, which was responsible for buying equipment, would not have a significant impact on Sinopec, the spokesman said. The company has similar operations in New Jersey and Texas. The 10 employees of another mainland company in the centre, Beijing-based China National Chemicals Import and Export (Sinochem), are all safe. Two other Beijing-based companies - China International Trust and Investment and the China Daily publisher - said all staff in the centre at the time of the attack were unhurt. But Shanghai Zhangjiang Hi-Tech Park Development said it had lost contact with one employee. The size of the company's staff is not known. Three Taiwan banks with offices in the centre also said their staff survived without serious injury.