Sterilization or cross-linking of products of all kinds, in particular plastics, by treatment with ionizing radiation, as well as the provision of related services. May establish or invest in branches, subsidiaries and other legal entities in Switzerland and abroad, and conduct all business directly or indirectly related to its purpose, acquire, encumber, sell and manage real estate and other tangible or intangible assets, and provide direct or indirect financing (including as liquidity compensation/concentration of net liquidity (cash pooling)) to its direct or indirect subsidiaries and third parties, including its direct or indirect shareholders and their direct or indirect subsidiaries, and provide collateral of all kinds for its own liabilities and those of other companies (including its direct or indirect subsidiaries and third parties, including its direct or indirect shareholders and their direct or indirect subsidiaries), including by way of pledges on or fiduciary transfers of the company's assets or guarantees of any kind, whether remunerated or not, also under preferential conditions without interest, excluding the company's profit motive and assuming cluster risks.