1. As the world's leading provider of pharmaceutical and diagnostic solutions, Roche also has products and services in medical equipment and services in halliburton.
2. Siemens Medical: As one of the important participants in the medical field, Siemens Medical provides various medical equipment, diagnostic technologies and medical solutions, which may compete with Halliburton in some fields.
3. Medtronic: Medtronic is a world-renowned medical technology company, providing a variety of medical equipment and solutions, surgical instruments, heart and vascular treatment. And will compete with Halliburton in some areas.