Brand stores in Pinduoduo cannot provide authorization certificate. Most products with brand certification marks in Pinduoduo are genuine. Pinduoduo has such a large platform that it used to take a low-cost route. It is not excluded that someone sells fakes on it, but if it is an officially certified business, it is of course genuine. If you see goods that are not officially certified, and the price of the goods is very cheap, you don't have to think about it and know that these goods can't be genuine at all, not even second-hand goods.