Honey, you've been cheated. The general operator of DuPont Membrane in China is Guangzhou Xinyi Trading Co., Ltd., whose full name is DOPOINT DuPont Membrane. It has been operating in the China market for more than ten years, and all the models start with DP, such as DP60 1.DP602. The LOGO on the door of the franchise store in the market is a star-spangled banner.