The sole proprietorship aims to plan, execute and maintain building technical systems, in particular heating, ventilation, air conditioning and sanitary systems, as well as provide related services. It also performs carpentry and roofing work, as well as activities in the fields of joinery, cabinetmaking and other related crafts. The sole proprietorship may establish branches in Switzerland and abroad, participate in other companies in Switzerland and abroad, and enter into all transactions and conclude contracts that are suitable for promoting the purpose of the sole proprietorship or are directly or indirectly related to it. It may acquire, manage, encumber and dispose of real estate, intellectual property rights and licenses of all kinds.