The laws of the Federal Public of Germany shall exclusively govern these Terms and the contractual relationship between you and us. So far as they would be applicable, the provisions of international private law and the United Nations Convention on Contracts for the International Sale of Goods are expressly excluded. Where Users are business entities, legal persons under German public law or bodies administering public law special funds, the courts of Cologne shall have exclusive jurisdiction over all disputes arising directly or indirectly from this contractual relationship, including, in particular, disputes concerning cheques and bills of exchange. In this event, we shall also be entitled to sue the User at its registered place of business. We reserve the right to amend these Terms without giving reason, unless the amendment is unreasonable for you as the User. We shall immediately inform you about amendments to these Terms. If you do not object within two weeks to the validity of the Terms as amended, you shall be deemed to have accepted the amended Terms. At the commencement of this time period, we undertake to draw your particular attention to the foreseen significance of your conduct. Amendments to these Terms must be in writing. Supplementary agreements shall not apply. Should provisions or fundamental parts of these Terms be void or voidable, in part or in their entirety, this shall not affect the validity of the remaining provisions.