The registration certificate is invalid and can always be used when applying. The registration certificate 20 14 10 1 is valid for the first four years and for the next five years.
For details, please refer to the Measures for the Administration of Medical Device Registration issued by official website, Food and Drug Administration.
PS: The above documents are applicable to products, generally the documents applied by the manufacturer or its agents for products. The second-class business registration certificate you mentioned is the certificate that the business enterprise applied for the enterprise.
PPS: A medical device business license is required, including "medical devices", and the validity period is the same as the business license; The second type requires the second type of business registration certificate, which has been used and has no validity period; The third category requires a medical device business license, valid for five years.