4. Force majeure
We reserve the right to withdraw from a contract already concluded if, as a result of force majeure, a significantly different starting position arises in the procurement of the means of production, manufacturing, storage, shipping or any other value creation steps. Any indemnification of the buyer is in any case limited to the negative contractual interest. Force majeure shall be understood to mean an external event that is caused by elementary forces of nature (e.g. fire after a lightning strike or epidemic/ pandemic), by the actions of third parties (e.g. strike or acts of war) or explicitly by events relating to raw material procurement (e.g. unavailability of a raw material or unforeseeable and significant increases in purchase prices) which, according to human insight and experience, are unforeseeable, cannot be prevented or rendered harmless by economically acceptable means, even by exercising the utmost care to be reasonably expected in the circumstances, and which are not to be taken into account by us due to their frequency.