The core activities of Ceatec GmbH include:
1. **Road Signaling**: The company offers services in the field of road signaling, particularly for construction sites, police, companies, and vocational schools.
2. **Medical Tech**: Ceatec is also active in the field of medical technology, especially in the inspection and measurement of medical devices.
3. **Further Education**: The company provides further education and training in the areas of road signaling, medical technology, and law.
4. **Legal Consulting**: Ceatec offers legal consulting and representation by a lawyer.
Overall, the core activity of the company can be described as a service offering in the areas of road signaling, medical technology, and legal consulting.