The core activity of Jenal AG encompasses various services, which can be divided into the following areas:
1. **Transportation**: The company offers transportation services, including construction site transportation, skip service, fuel transportation, international transportation, cement transportation, and winter maintenance.
2. **Civil Engineering**: Jenal AG carries out civil engineering work, including the use of heavy machinery and equipment.
3. **Crane Services**: The company provides crane services, including the use of high-performance cranes for heavy loads and construction projects.
4. **Garage**: Jenal AG operates a garage where vehicles are repaired and maintained, including cars and agricultural equipment.
5. **Waste Management and Landfill**: The company is responsible for the disposal and recycling of materials at the landfills in the Samnaun valley.
Overall, the core activity of the company can be described as a comprehensive service offering in the areas of transportation, construction, and waste management.