Artikel III

In respect of paragraphs 1 and 2 of article 7, where an enterprise of a Contracting State sells goods or merchandise or carries on business in the other Contracting State through a permanent establishment situated therein, the profits of that permanent establishment shall not be determined on the basis of the total amount of income of the enterprise, but shall be determined only on the basis of that portion of the income of the enterprise that is attributable to the actual activity of the permanent establishment in respect of such sales or business. Specifically, in the case of contracts for the survey, supply, installation or construction of industrial, commercial or scientific equipment or premises, or of public works, when the enterprise has a permanent establishment, the profits attributable to such permanent establishment shall not be determined on the basis of the total amount of the contract, but shall be determined only on the basis of that part of the contract that is effectively carried out by the permanent establishment in the Contracting State where the permanent establishment is situated, if the data on expenses and costs incurred for the purposes of the above-mentioned activities of the permanent establishment are provided by the taxpayer to the tax authorities.