In Shanghai, the old and well-known patent agencies are still junior high schools, which have always been ahead of other firms in Shanghai and can be called the first echelon; in the second echelon below, I think Guanghua, Shuoli, and Baiyi and Bixing are pretty good, with a certain scale. The number of applications is basically more than a thousand every year, and the management is relatively standardized. Next is the third echelon, which is dominated by young firms established in the past few years and has a large scale. It's a bit small now, and I estimate that in a few years, we should be able to do it; the fourth echelon is unqualified black agency companies. Their main business is generally trademarks, company registration, agency accounting, technology policies, etc., depending on the customer If there is a need for patents, just take it over and subcontract it to other individual agents or small agencies to handle it. Our company has chosen Shanghai Shuoli Intellectual Property Agency, you can go and have a look.