In the context of German commercial law, important types of companies are: 1. **ellschaft mit beschränkter Haftung (GmbH)**: This is a limited liability company, which is a popular of business entity in Germany. It offers limited liability to its owners, meaning their personal assets are protected from the company's debts. 2. **Aktiengesellschaft (AG)**: This is a public limited company, which can issue shares to the public and is typically used for larger businesses. Shareholders have limited liability, and the company is managed by a board of directors. Both types of companies are governed by specific regulations under the German Commercial Code (Handelsgesetzbuch, HGB) and the respective laws pertaining to each company form.