Upon request, the Tariff Commission issues Classification Rulings pursuant to Section 1100 of the CMTA.
Section 1100 provides that:
An importer or exporter may file a written application for an advance ruling on the tariff classification of goods with the Commission. The Commission shall render a ruling within thirty (30) days from receipt of a properly documented application.
When a declared tariff classification of goods, not subject of a pending application for advance ruling, is in dispute, the importer, exporter, or the Bureau shall submit the matter to the Commission for a ruling, without prejudice to the application of Section 1106 of this Act on "protest": Provided, That such rulings of the Commission on commodity classification shall be binding upon the Bureau, unless the Secretary of Finance shall rule otherwise.
Further, Section 1103 of said Act provides that:
An application for an advance ruling shall cover only one (1) product or item. The application for advance ruling shall be filed at least ninety (90) days before the importation or exportation of the product item, as the case may be.