Execution and planning of all metal construction and locksmith work as well as trade in blacksmithing articles and goods of all kinds; the sole proprietorship can enter into all transactions and conclude contracts that are suitable for promoting the purpose of the sole proprietorship or that are directly or indirectly related to it, furthermore establish branch offices in Switzerland and abroad, buy and sell real estate and participate in or merge with other companies, as well as acquire and dispose of real estate in Switzerland and abroad.