The core activity of BEL Holding AG encompasses four main areas:
1. **Consulting**: The company provides consulting services for companies, real estate, and investments, including location and strategy development.
2. **Real Estate**: BEL Holding AG offers professional services in all areas of the real estate industry, including project development, investments, sales, rental, and leasing.
3. **Investments**: The company is active in investments in various companies and projects.
4. **Clean Energy Projects**: BEL Holding AG develops and supports projects in the field of renewable energy.
Overall, the company offers a comprehensive range of services for companies, investors, owners, and tenants in the areas of real estate, investments, and clean energy.