This is a floor drain. The way to tell the truth is to look at the sign. If it is true, it has three anti-counterfeiting marks, which can be used to distinguish whether it is fake or not. Look at the logo. If it is a genuine submarine floor drain, then every part of it has a brand logo or name, and the imprint is clear, but the counterfeit product does not. Even if there is a logo, it looks blurred. Look at the packaging. There is an anti-counterfeiting code on the outer packaging of genuine products. You can enter official website, enter the security code, and check the authenticity. After all, it is genuine, so I am confident, while fake and shoddy products are not.