Located in the four-in-one World Trade Center, The International Trade Building (ITB) is fully equipped with the most modern facilities and is specifically designed to accommodate businesses engaged in foreign trade. The basement level includes a parking lot, along with the main electricity supply unit, emergency generators, water reservoir, and a post office branch.

The main lobby on the first floor is broad and spacious, with a ceiling soaring to a full 7.2 meters high. On the east and west sides are located the building's coordination office and security services.

The Taiwan External Trade Development Council(TAITRA) occupies the fourth to seventh floors and the fourth floor has a bridge connected to the third floor of the Exhibition Hall. The 9th to 32nd floors are leased as business offices and the Taipei World Trade Center Club is on the 33rd and 34th floors..