The Industrial and Commercial Bureau will not check if the product is watermarked. The Industry and Commerce Bureau will not directly investigate and punish products with watermarks, because it is not illegal to add watermarks to products. However, if the process of adding watermarks to products involves illegal activities such as infringement of other people's intellectual property rights, such as misappropriation of other people's trademarks or copyrights, the Industry and Commerce Bureau will intervene in the investigation and impose penalties according to relevant laws and regulations. Watermarked products are usually used to prevent piracy and infringement, and to protect the intellectual property and commercial interests of the product. Therefore, if consumers discover that watermarked products are infringing, they can report and complain to relevant departments such as the Industrial and Commercial Bureau to protect their legitimate rights and interests.