Sign.

First of all, you don’t have to worry too much. This is not a big deal. If your behavior is indeed what you said, then congratulations, the matter is not serious. It is probably because the company has a relatively high awareness of intellectual property protection, so the measures they take are more formal. Your behavior is far from a crime, it is just an infringement. And you said it’s just a few copies, which is far from the level of a lawsuit. Don’t worry, they will never sue you. The lawsuit is not as simple as you think. Can you just pay 10 yuan? No, you need to prepare evidence. There are still many things to deal with before the case, so don’t worry. Some people may sue because of a quarrel, but most people won’t. Moreover, your case is not a deterrent, and the company will not do this. Effort without reward.

Secondly, signing just proves your attitude of respecting their intellectual property rights and your willingness to repent. This is like when you make your boss angry. Is it better to apologize or fight with him? Of course an apology is more appropriate.

As for the issues mentioned above about not signing for fear of leaving evidence, you can completely ignore it. What evidence is this? What you did was wrong, that's indisputable. Even though you didn't know it before, but you apologized for your mistake after you found out, does this prove that you did it on purpose? What is the logic of this? Is there any logic in this? Ignore them, they won't sue you! Please be at ease!

Finally, I would like to refute something above. Yes, if it is a legal channel and the product is genuine (not pirated), the company has no right to restrict further sales after the first sale, but do you see the point? This is piracy! Thank you, so the rights holder has the right to crack down on this kind of sales and dissemination at any time. In addition, the purpose of submitting the source of infringing products is not to give you an opportunity to exempt yourself from liability. How can you not be held responsible for infringement? Liability arises with your infringing behavior. What is exempted is your liability for compensation. You just don’t have to compensate. To sum up, you must not be stubborn, have a good attitude, and communicate well with Taobao as a third party, and there will be no big problems. As for you saying that you don’t remember where you bought it, that’s okay. Didn’t you say you bought it at a second-hand market? Just write about the second-hand market. If you want to look into it more carefully, just say that they may have closed down, and they won’t embarrass you too much~

Finally, one more thing, I am actually a student, but a law undergraduate majoring in a first-class university. Then please take a look at my account level and adoption rate (90). So please rest assured that I will not make up some nonsense and baseless words to deceive you.