If the product is not sold out during the sales process, but the authorization has expired, there are several suggestions:

1. Understand the relevant laws and regulations: First, you need to understand the relevant laws and regulations. , such as the Trademark Law of the People's Republic of China, the Civil Code of the People's Republic of China, etc., in order to determine whether there are corresponding legal responsibilities that need to be borne.

2. Communication and negotiation: You should communicate and negotiate with the authorized party in a timely manner to understand whether the authorization can be extended or the authorization contract can be re-signed. At the same time, we can also discuss whether other methods can be adopted to solve the problem, such as licensing fee reductions, etc.

3. Consider re-applying for authorization: If an agreement cannot be reached through negotiation, then you can consider re-applying for authorization or license to continue selling the product. But be aware that this may take more time and money.

4. Find new sales channels: If the product can no longer be sold in the original sales channel, you can find new sales channels. For example, you can sell it on an online sales platform, or find other partners to sell the product.

5. Proactive measures to deal with inventory: Proactive measures can be taken to deal with inventory. For example, clearance processing, promotion activities, etc. can be carried out in order to digest the inventory as soon as possible. At the same time, you can also contact consumers for returns or exchanges to reduce losses.

In short, when dealing with such problems, it is necessary to analyze calmly, respond proactively, and reduce losses as much as possible.