In respect of paragraphs 1 and 2 of Article 7, where an enterprise of one of the States sells goods or merchandise or carries on business in the other State through a permanent establishment situated therein, the profits of that permanent establishment shall not be determined on the basis of the total amount received by the enterprise, but shall be determined only on the basis of the remuneration which is attributable to the actual activity of the permanent establishment for such sales or business. Especially, 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 of 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 which is effectively carried out by the permanent establishment in the State where the permanent establishment is situated. The profits related to that part of the contract which is carried out by the head office of the enterprise shall be taxable only in the State of which the enterprise is a resident.
