Which is more authoritative, the CE certification body ITC or NQA?

The two institutions you mentioned are not authoritative, at least at present, domestic institutions are not authoritative. Since your products are medical supplies, you must choose a truly authoritative organization for cooperation certification. For example, SGS, TUV, Nemko can also do it. As for the announcement number someone said upstairs, do you need to reserve your opinion on it? It is suggested that the landlord do an industry survey (you can consult in the foreign trade forum). In addition, if there is already a customer order, you can ask the customer what the requirements are, such as whether to specify which organization for certification, and whether there is a notice number requirement. This will make the purpose clearer. Good luck to the landlord.