Operation, management and administration of hotels, providing advice, market research in the hotel industry, negotiation and execution of trade in all kinds, trade in food products, especially agency business, import and export, purchase, management and exploitation of patents, inventions and manufacturing processes of all kinds and realization of industrial studies and projects, as well as planning, construction and operation of factories; carrying out financial and investment business, acquisition, mortgage lending and alienation of real estate in Switzerland and abroad, as well as renovation, purchase and sale of commercial and rental properties.