2021GB/T 25440.2-2021 Retrieval and analysis of surgical implants—Part 2: Analysis of retrieved surgical implants
2011GB/T 25440.4-2010 Removal and Analysis of Surgical Implants Part 4: Analysis of Removal Ceramic Surgical Implants
GB/T 25440.4-2010 Removal and Analysis of Surgical Implants Part 4: Analysis of Removal Ceramic Surgical Implants was changed to GB/T 25440.2-2021 Retrieval and analysis of surgical implants—Part 2: Analysis of retrieved surgical implants.