1. online shopping: online shopping can be done through e-commerce platforms such as Taobao, JD.COM and Tmall. Searching for "Duo 'er Milk Shake" on these platforms will reveal that many merchants offer Duo 'er Milk Shake products, which can be purchased according to their own needs and preferences.
2. Physical store purchase: You can go to some large supermarkets, convenience stores, imported food stores and other physical stores to buy. These stores usually have a special imported food section, where you can find DOL milkshake products.
Please note that when buying any product, especially food, it is recommended that you pay attention to the shelf life and origin of the product to ensure the freshness and safety of the product.