Customs Union. 4. With effect from a date to be determined by the Council, the Partner States shall not impose any new duties and taxes or increase existing ones in respect of products traded within the Community and shall transmit to the Secretariat all information on any tariffs for study by the relevant institutions of the Community. 5. Except as may be provided for or permitted under this Treaty, the Partner States agree to remove all the existing non-tariff barriers on the importation into their territory of goods originating from the other Partner States and thereafter to refrain from imposing any further non-tariff barriers. 6. The Partner States shall refrain from enacting legislation or applying administrative measures which directly or indirectly discriminate against the same or like products of other Partner States. 7. For purposes of this Article, the Partner States shall within a period of four years conclude the Protocol on the Establishment of a Customs Union. ARTICLE 76 Establishment of a Common Market 1. There shall be established a Common Market among the Partner States. Within the Common Market, and subject to the Protocol provided for in paragraph 4 of this Article, there shall be free movement of labour, goods, services, capital, and the right of establishment. 2. The establishment of the Common Market shall be progressive and in accordance with schedules approved by the Council. 3. For purposes of this Article, the Council may establish and confer powers and authority upon such institutions as it may deem necessary to administer the Common Market. 4. For the purpose of this Article, the Partner States shall conclude a Protocol on a Common Market. 53