the profit of trademark registration is very low, and professional agencies have inquiry and audit fees, and the service fee is within 1 years of trademark validity, with an average price of 6-8. Ali and other agents are very cheap, but they don't review and follow up. The service ends until submission, and many trademark office notification documents don't inform you. There are often customers whose trademarks of Alibaba's registered trademarks are objected, invalid and withdrawn, and customers don't know.