If the panda logo is found at the bottom of the turtle, it means that the product may be fake or counterfeit. Before purchasing this product, you can take the following measures:

1. Check the source and authorization of the product: ensure that the product comes from a trusted source and has legal authorization. You can contact product manufacturers or official channels for more information.

2. Check the product quality standard: check whether the quality standard of turtle bottom plate meets the industry standard and product specification. If you find that the quality does not meet the requirements, you can consider choosing other brands or products.

3. Report fake and shoddy products: If you are sure that this product is fake or counterfeit, you can report it to the relevant departments (such as the Market Supervision Administration) to protect the rights and interests of consumers and crack down on fake and shoddy products.

In a word, if you find a panda sign on the turtle floor, I suggest you don't buy this product and take corresponding measures to safeguard your rights and interests.