Q: If I want to open a chain store, what types of trademarks should I buy? Answer: This is relatively unified. What you can currently do is Category 35: 3503 Promoting import and export agency for others 350005, Auction 350030, Promoting for others 350071, Purchasing for others (purchasing goods or services for other enterprises) 350085, Marketing 350106 , Telephone Marketing 350107 If you have better protection, it is best to buy the corresponding category of the product you make.