Opening a Douyin store to sell laundry detergent requires a business license, brand qualification, industry qualification, and product qualification.

1. Business license: If you open an ordinary Douyin store and do not sell branded products, you can apply for a self-employed business license to open a store.

2. Brand qualification: If you want to open a brand store, including flagship store, specialty store, specialty store, etc., you need brand qualification. The main ones are trademark certificates and trademark authorization letters.

3. Industry qualifications: Whether it is an individual store or a brand store, it requires industry qualifications to operate.

4. Product qualifications: If you are a brand store, your products will basically have product qualifications. However, if you want to sell branded products in an individual store, you need to obtain product qualifications before you can add them. Otherwise, you will be fined for violations. .