transport, together with their cargo, shall be presented at the Customs offices of commencement for examination to ensure that they comply with the technical conditions stipulated in Appendix 2 of this Annex before each transit traffic operation is undertaken. ARTICLE 6 BONDS AND SURETIES All SADC transit traffic operations carried under the cover of the SRCTD or any other transit document approved by CMT shall be covered by Customs bond and sureties arrangements. ARTICLE 7 SADC TRANSIT DOCUMENT 1. Subject to conditions and regulations as CMT may deem necessary, each Member State undertakes to authorise a transistor or his authorised agent, to prepare in respect of each consignment of transit goods SADC Transit Document in accordance with the rules laid down in Appendix 1 of this Annex. 2. SADC Transit Documents shall conform to the standard form approved by the CMT , SADC Transit Documents shall be valid for only transit operation and shall contain a sufficient number of copies for Customs control and discharge required for the transport operation concerned. 3. All means of transport covered by the provisions of this Annex shall be accompanied by relevant SADC Transit Documents and such documents shall, on demand, be presented by the carriers, together with the respective means of transport and certificates to the Customs offices en-route and the Customs offices of destination for their appropriate actions. ARTICLE 8