The validity period of the NMPA (National Medical Products Administration) certification for medical devices in China is generally five years. After this period, manufacturers must apply for a renewal of the registration if they wish to continue selling the device in China.

To renew the NMPA certification, the application should typically be submitted six months before the expiration of the original certificate. If the renewal is not completed within this timeframe, the certification will expire, and the device will no longer be legally allowed to be marketed or sold in China until a new certification is granted.

The renewal process usually involves a review of the device’s performance, any post-market surveillance data, and changes in regulations that may have occurred since the original certification.

If you have specific questions about the renewal process or requirements, feel free to ask!