The exchange of pre-contractual information or the provision of contractual terms and conditions shall be in writing. This may be done electronically. The name or company name and address of the organiser or retailer must be mentioned, together with details of its registration in the register provided for in article L. 141-3 or, where applicable, the name, address and details of the registration of the federation or union mentioned in the second paragraph of article R. 211-2.