For deliveries later than 4 months from the date of signing of the contract, the prices valid at the time of delivery shall apply. If the Buyer is in default with payment of an invoice, this will result in all other open invoices from us becoming immediately due. All deliveries are made ex works Delmenhorst warehouse. We shall also be entitled to withdraw from the contract if we become aware of circumstances which could preclude or delay the proper fulfilment of the contract by the Buyer. The Buyer shall be entitled to re-sell the goods purchased from us.