In order to strengthen the supervision and guidance on the registration of medical devices and further improve the quality of registration review, the National Medical Products Administration formulated the Guidance for the Registration Review of Disposable High Pressure Contrast Syringes and Accessories, Guidance for the Registration Review of Internal Fixation System Products of Metal Plates (2021 Revision), Guidance for Registration Review of Magnesium Orthopaedic Implants, Guidance for the Registration Review of Microcatheters, Guidance for the Registration Review of Disposable Endoscopic Injection Needles, and Guidance for the Registration Review of Intraocular Lens, which were issued on January 11, 2022.