All commodity trading forex brokers and other types of forex & CFD brokers in Germany are required to be regulated by BaFin (known as Bundesanstalt für Finanzdienstleistungsaufsicht in German). As usual in Europe, BaFin is in turn subject to the regulations issued by the European Securities and Markets Authority (ESMA).
As a large European country with many forex brokers, Germany is home to a fair number of these companies. However, regulations are now strict thanks to the ESMA, and leverage on commodity CFDs has been reduced to just 1:20 for gold and 1:10 for all other commodities. With the right approach and enough starting capital, however, making money from commodity trading is still within reach for the average retail trader.