1. engineering design certificate: afterloading therapy needs engineering design first, and designers need corresponding design qualifications and certificates.
2. Qualification certificate of builder: The post-installation treatment project needs to be carried out by a builder with corresponding qualifications, and the builder needs to hold the qualification certificate of builder.
3. Construction permit: Post-loading treatment construction requires obtaining a construction permit, which is a necessary certificate for construction according to law.
4. Relevant medical license: If afterloading treatment involves the use of medical institutions or medical equipment, a corresponding medical license is required, which is an important document for the government to supervise the medical industry.
The specific documents and requirements may vary from region to region and specific circumstances. It is recommended to consult the relevant local authorities before post-loading to ensure compliance with the requirements of laws and regulations. If you have specific needs, it is recommended to consult a professional builder or consultant.