Yes, no matter from what point of view, you need relevant labels. When the manufacturer enters the finished product warehouse, follow the relevant labels. From packaging to scanning to transportation, labels are needed to mark goods. Now it is expanded to scan bar code, which is more convenient and clear.

After knowing your description in detail, I understand a few points. You can do it. The first is to take a photo of the product to Tmall customer service, and the second is to take a photo of the product to explain to the manufacturer why there is no relevant label. The third responsibility is that the seller didn't confirm whether the product was qualified or not when receiving the goods, whether there were relevant labels and qualified marks, and finally waited for their results. If it can't be solved, appeal and ask the court to come forward to solve it.