Has anyone ever done "real dropshipping"?

Hello to all money hunters, my question is serious, I'm not referring to POD with printful and other similar services, I'm actually referring to taking an already existing Chinese product and putting your own brand on it. A sort of rebranding, but still with the products shipped by them.

Does anyone know what I'm talking about? Who has already immersed themselves in these waters? How did you find the contact?

You will have my respect for your constructive response brother